Standard Lemma guide

obtuse

adj · verb · 12 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • UK: /əbˈtjuːs/
  • UK: /-ˈtʃuːs/
  • General-American: /əbˈt(j)us/
  • General-American: /ɑb-/
  • General-American: Recorded audio is listed in the source snapshot.
  • Australia: Recorded audio is listed in the source snapshot.
  • rhymes with -uːs
  • CMU ARPABET: AA0 B T UW1 S Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Blunt; not sharp, pointed, or acute in form.

Definition source: English Wiktionary via Wiktextract

Topics: biology, botany, natural-sciences, zoology

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Blunt; not sharp, pointed, or acute in form.

Blunt, or rounded at the extremity.

Definition source: English Wiktionary via Wiktextract

Topics: biology, botany, natural-sciences, zoology

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adj

Meaning 3

Blunt; not sharp, pointed, or acute in form.

Larger than one, and smaller than two right angles, equivalently more than 90° and less than 180°.

Definition source: English Wiktionary via Wiktextract

Usage: specifically

Topics: biology, botany, geometry, mathematics, natural-sciences, sciences, zoology

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: salient

4

adj

Meaning 4

Blunt; not sharp, pointed, or acute in form.

Obtuse-angled, having an obtuse angle.

Definition source: English Wiktionary via Wiktextract

Qualifier: by ellipsis

Topics: biology, botany, geometry, mathematics, natural-sciences, sciences, zoology

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

adj

Meaning 5

Intellectually dull or dim-witted.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

adj

Meaning 6

Of sound, etc.: deadened, muffled, muted.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

adj

Meaning 7

Indirect or circuitous.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

verb

Meaning 8

To dull or reduce an emotion or a physical state.

Definition source: English Wiktionary via Wiktextract

Usage: obsolete, transitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

9

adjective

Meaning 9

of an angle; between 90 and 180 degrees

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: acute

10

adjective satellite

Meaning 10

slow to learn or understand; lacking intellectual acuity- Thackeray

Definition source: Princeton WordNet 3.0

Examples

  • so dense he never understands anything I say to him
  • never met anyone quite so dim
  • although dull at classical learning, at mathematics he was uncommonly quick
  • dumb officials make some really dumb decisions
  • he was either normally stupid or being deliberately obtuse
  • worked with the slow students

Meaning relationships

Synonyms: dense, dim, dull, dumb, slow

Antonyms: none provided

11

adjective satellite

Meaning 11

lacking in insight or discernment- Jasper Griffin

Definition source: Princeton WordNet 3.0

Examples

  • too obtuse to grasp the implications of his behavior
  • a purblind oligarchy that flatly refused to see that history was condemning it to the dustbin

Meaning relationships

Synonyms: purblind

Antonyms: none provided

12

adjective satellite

Meaning 12

(of a leaf shape) rounded at the apex

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From Middle English obtuse, from Latin obtūsus (“blunt, dull; obtuse”), past participle of obtundere, from obtundō (“to batter, beat, strike; to blunt, dull”), from ob- (“against”) (see ob-) + tundō (“to beat, strike; to bruise, crush, pound”) (ultimately from Proto-Indo-European *(s)tewd-, from *(s)tew- (“to hit; to push”)). More at obtund.

Across languages

Translations

147 source translations are retained for this English entry.

  • Bulgarian: тъп (tǎp) — not sharp, pointed, or acute in form
  • Chinese Mandarin: 鈍 /钝 (dùn) — not sharp, pointed, or acute in form
  • Czech: tupý — not sharp, pointed, or acute in form
  • Esperanto: malakra — not sharp, pointed, or acute in form
  • Finnish: tylppä — not sharp, pointed, or acute in form
  • Finnish: tylsä — not sharp, pointed, or acute in form
  • Māori: hāpūpū — not sharp, pointed, or acute in form
  • Polish: rozwarty — not sharp, pointed, or acute in form
  • Portuguese: embotado — not sharp, pointed, or acute in form
  • Slovak: tupý — not sharp, pointed, or acute in form
  • Ottoman Turkish: كور (kör) — not sharp, pointed, or acute in form
  • Armenian: բութ (butʻ) — botany, zoology: blunt
  • Dutch: bot — botany, zoology: blunt
  • Esperanto: stumpa — botany, zoology: blunt
  • Finnish: tylppä — botany, zoology: blunt
  • German: stumpf — botany, zoology: blunt
  • Greek: αμβλύς (amvlýs) — botany, zoology: blunt
  • Macedonian: тап (tap) — botany, zoology: blunt
  • Portuguese: obtuso — botany, zoology: blunt
  • Russian: тупо́й (tupój) — botany, zoology: blunt
  • Russian: притуплённый (pritupljónnyj) — botany, zoology: blunt
  • Spanish: obtuso — botany, zoology: blunt
  • Spanish: romo — botany, zoology: blunt
  • Swedish: trubbig — botany, zoology: blunt
  • Swedish: slö — botany, zoology: blunt
  • Armenian: բութ (butʻ) — geometry: larger than 90° but less than 180°
  • Asturian: obtusu — geometry: larger than 90° but less than 180°
  • Belarusian: тупы́ (tupý) — geometry: larger than 90° but less than 180°
  • Bulgarian: тъп (tǎp) — geometry: larger than 90° but less than 180°
  • Burmese: ကျယ် (kyai) — geometry: larger than 90° but less than 180°
  • Catalan: obtús — geometry: larger than 90° but less than 180°
  • Chinese Mandarin: 鈍 /钝 (dùn) — geometry: larger than 90° but less than 180°
  • Czech: tupý — geometry: larger than 90° but less than 180°
  • Esperanto: obtuza — geometry: larger than 90° but less than 180°
  • Estonian: nüri — geometry: larger than 90° but less than 180°
  • Estonian: tömp — geometry: larger than 90° but less than 180°
  • Finnish: tylppä — geometry: larger than 90° but less than 180°
  • French: obtus — geometry: larger than 90° but less than 180°
  • Galician: obtuso — geometry: larger than 90° but less than 180°
  • German: stumpf — geometry: larger than 90° but less than 180°
  • Greek: αμβλύς (amvlýs) — geometry: larger than 90° but less than 180°
  • Hungarian: tompa — geometry: larger than 90° but less than 180°
  • Iban: chakah — geometry: larger than 90° but less than 180°
  • Ingrian: tyltsä — geometry: larger than 90° but less than 180°
  • Italian: ottuso — geometry: larger than 90° but less than 180°
  • Japanese: 鈍角の (donkaku no) — geometry: larger than 90° but less than 180°
  • Khmer: ទាល (tiəl) — geometry: larger than 90° but less than 180°
  • Lithuanian: bukas — geometry: larger than 90° but less than 180°
  • Macedonian: тап (tap) — geometry: larger than 90° but less than 180°
  • Malay: cakah — geometry: larger than 90° but less than 180°
  • Māori: hāpūpū — geometry: larger than 90° but less than 180°
  • Central Melanau: langak — geometry: larger than 90° but less than 180°
  • Central Melanau: tangak — geometry: larger than 90° but less than 180°
  • Mongolian: мохоо (moxoo) — geometry: larger than 90° but less than 180°
  • Navajo: ałhiʼdiidzo — geometry: larger than 90° but less than 180°
  • Norwegian: stump — geometry: larger than 90° but less than 180°
  • Polish: rozwarty — geometry: larger than 90° but less than 180°
  • Polish: tępy — geometry: larger than 90° but less than 180°
  • Portuguese: obtuso — geometry: larger than 90° but less than 180°
  • Romanian: obtuz — geometry: larger than 90° but less than 180°
  • Russian: тупо́й (tupój) — geometry: larger than 90° but less than 180°
  • Slovak: tupý — geometry: larger than 90° but less than 180°
  • Slovene: tup — geometry: larger than 90° but less than 180°
  • Spanish: obtuso — geometry: larger than 90° but less than 180°
  • Swedish: trubbig — geometry: larger than 90° but less than 180°
  • Tagalog: bika — geometry: larger than 90° but less than 180°
  • Thai: ป้าน (bpâan) — geometry: larger than 90° but less than 180°
  • Ukrainian: тупи́й (tupýj) — geometry: larger than 90° but less than 180°
  • Armenian: բութ (butʻ) — intellectually dull
  • Bulgarian: тъп (tǎp) — intellectually dull
  • Catalan: obtús — intellectually dull
  • Chinese Mandarin: 遲鈍 /迟钝 (chídùn) — intellectually dull
  • Czech: tupý — intellectually dull
  • Czech: omezený — intellectually dull
  • Czech: zabedněný — intellectually dull
  • Dutch: afgestompt — intellectually dull
  • Esperanto: stulta — intellectually dull
  • Esperanto: malsprita — intellectually dull
  • Estonian: juhm — intellectually dull
  • Estonian: tülp — intellectually dull
  • Estonian: loid — intellectually dull
  • Finnish: hidasjärkinen — intellectually dull
  • Finnish: hidasälyinen — intellectually dull
  • French: obtus — intellectually dull
  • Galician: parvo — intellectually dull
  • Georgian: ჩლუნგი (člungi) — intellectually dull
  • Georgian: ყეყეჩი (q̇eq̇eči) — intellectually dull
  • Georgian: შტერი (šṭeri) — intellectually dull
  • German: begriffsstutzig — intellectually dull
  • German: beschränkt — intellectually dull
  • German: stumpf — intellectually dull
  • German: schwerfällig — intellectually dull
  • Greek: κουτός (koutós) — intellectually dull
  • Greek: αμβλύνους (amvlýnous) — intellectually dull
  • Icelandic: sljór — intellectually dull
  • Icelandic: tregur — intellectually dull
  • Italian: ottuso — intellectually dull
  • Macedonian: тап (tap) — intellectually dull
  • Macedonian: глуп (glup) — intellectually dull
  • Macedonian: глупав (glupav) — intellectually dull
  • Norwegian Bokmål: dum — intellectually dull
  • Norwegian Bokmål: sløv — intellectually dull
  • Norwegian Bokmål: treg — intellectually dull
  • Portuguese: obtuso — intellectually dull
  • Portuguese: bronco — intellectually dull
  • Portuguese: parvo — intellectually dull
  • Romanian: obtuz — intellectually dull
  • Russian: тупо́й (tupój) — intellectually dull
  • Russian: недалёкий (nedaljókij) — intellectually dull
  • Slovak: tupý — intellectually dull
  • Spanish: obtuso — intellectually dull
  • Swedish: trög — intellectually dull
  • Swedish: slö — intellectually dull
  • Swedish: tjockskallig — intellectually dull
  • Chinese Mandarin: 沉悶 /沉闷 (chénmèn) — deadened, muffled, muted
  • Dutch: gesmoord — deadened, muffled, muted
  • Esperanto: dampsona — deadened, muffled, muted
  • Esperanto: dampata — deadened, muffled, muted
  • Estonian: tuhm — deadened, muffled, muted
  • Estonian: tumm — deadened, muffled, muted
  • Estonian: sumbe — deadened, muffled, muted
  • Estonian: summutatud — deadened, muffled, muted
  • Finnish: vaimea — deadened, muffled, muted
  • Finnish: vaimennettu — deadened, muffled, muted
  • French: sourd — deadened, muffled, muted
  • German: unterdrückt — deadened, muffled, muted
  • German: gedämpft — deadened, muffled, muted
  • German: abgeschwächt — deadened, muffled, muted
  • German: abgestumpft — deadened, muffled, muted
  • German: betäubt — deadened, muffled, muted
  • German: abgemildert — deadened, muffled, muted
  • German: gefühllos — deadened, muffled, muted
  • Icelandic: daufur — deadened, muffled, muted
  • Portuguese: abafado — deadened, muffled, muted
  • Romanian: atenuat — deadened, muffled, muted
  • Russian: приглушённый (priglušónnyj) — deadened, muffled, muted
  • Swedish: dov — deadened, muffled, muted
  • Esperanto: malrekta — indirect or circuitous — see also indirect, circuitous
  • Estonian: kaudne — indirect or circuitous — see also indirect, circuitous
  • Finnish: epäsuora — indirect or circuitous — see also indirect, circuitous
  • German: indirekt — indirect or circuitous — see also indirect, circuitous
  • German: umständlich — indirect or circuitous — see also indirect, circuitous
  • German: weitschweifig — indirect or circuitous — see also indirect, circuitous
  • Bulgarian: затъпявам (zatǎpjavam) — to dull or reduce an emotion or a physical state
  • Esperanto: dampi — to dull or reduce an emotion or a physical state
  • Slovak: otupiť — to dull or reduce an emotion or a physical state
  • Slovak: otupovať — to dull or reduce an emotion or a physical state
Real reading context

obtuse in complete knowledge articles