Standard Lemma guide

opaque

adj · noun · verb · 10 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.

  • Received-Pronunciation: /əʊˈpeɪk/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • Canada, General-American: /oʊˈpeɪk/
  • Australian: /əʉˈpæɪk/
  • Australian: [ɐʉˈpæɪk] some speakers
  • New-Zealand: /ɐʉˈpæɪk/
  • rhymes with -eɪk
  • CMU ARPABET: OW0 P EY1 K Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Neither reflecting nor emitting light.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Allowing little light to pass through, not translucent or transparent.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adj

Meaning 3

Unclear, unintelligible, hard to get or explain the meaning of.

Definition source: English Wiktionary via Wiktextract

Usage: figuratively

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

adj

Meaning 4

Obtuse, stupid.

Definition source: English Wiktionary via Wiktextract

Usage: figuratively

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

adj

Meaning 5

Describes a type for which higher-level callers have no knowledge of data values or their representations; all operations are carried out by the type's defined abstract operators.

Definition source: English Wiktionary via Wiktextract

Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

An area of darkness; a place or region with no light.

Definition source: English Wiktionary via Wiktextract

Usage: obsolete, poetic

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

noun

Meaning 7

Something which is opaque rather than translucent.

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 make, render (more) opaque.

Definition source: English Wiktionary via Wiktextract

Usage: transitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

9

adjective

Meaning 9

not transmitting or reflecting light or radiant energy; impenetrable to sight

Definition source: Princeton WordNet 3.0

Examples

  • opaque windows of the jail
  • opaque to X-rays

Meaning relationships

Synonyms: none provided

Antonyms: clear

10

adjective satellite

Meaning 10

not clearly understood or expressed

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: unintelligible

Antonyms: none provided

History

Etymology

From Middle English opake, from Latin opacus (“shaded, shady, dark”) (of unknown origin), later reinforced from Middle French opaque. Doublet of ubac.

Across languages

Translations

97 source translations are retained for this English entry.

  • Bulgarian: ма́тов (mátov) — neither reflecting nor emitting light
  • German: matt — neither reflecting nor emitting light
  • German: dunkel — neither reflecting nor emitting light
  • Italian: opaco — neither reflecting nor emitting light
  • Arabic: أَكْمَد (ʔakmad) — hindering light to pass through
  • Belarusian: непразры́сты (njeprazrýsty) — hindering light to pass through
  • Bulgarian: непрозрачен (neprozračen) — hindering light to pass through
  • Catalan: opac — hindering light to pass through
  • Chinese Mandarin: 不透明 (bù tòumíng) — hindering light to pass through
  • Czech: neprůhledný — hindering light to pass through
  • Danish: ugennemsigtig — hindering light to pass through
  • Danish: uigennemsigtig — hindering light to pass through
  • Dutch: opaak — hindering light to pass through
  • Dutch: ondoorschijnend — hindering light to pass through
  • Dutch: ondoorzichtig — hindering light to pass through
  • Finnish: läpinäkymätön — hindering light to pass through
  • Finnish: läpikuultamaton — hindering light to pass through
  • French: opaque — hindering light to pass through
  • Galician: opaco — hindering light to pass through
  • Georgian: გაუმჭვირვალე (gaumč̣virvale) — hindering light to pass through
  • Georgian: შუქგაუმტარი (šukgaumṭari) — hindering light to pass through
  • German: undurchsichtig — hindering light to pass through
  • German: undurchlässig — hindering light to pass through
  • German: opak — hindering light to pass through
  • German: blickdicht — hindering light to pass through
  • Greek: αδιαφανής (adiafanís) — hindering light to pass through
  • Hungarian: átlátszatlan — hindering light to pass through
  • Icelandic: ógagnsær — hindering light to pass through
  • Italian: opaco — hindering light to pass through
  • Italian: opaca — hindering light to pass through
  • Japanese: 不透明な (futōmei-na) — hindering light to pass through
  • Korean: 불투명(不透明)한 (bultumyeonghan) — hindering light to pass through
  • Latvian: necaurredzams — hindering light to pass through
  • Latvian: necaurspīdīgs — hindering light to pass through
  • Malay: legap — hindering light to pass through
  • Māori: puatakore — hindering light to pass through
  • Marathi: अपारदर्शक (apārdarśak) — hindering light to pass through
  • Norwegian: opak — hindering light to pass through
  • Norwegian: ugjennomsiktig — hindering light to pass through
  • Norwegian: ugjennomskinnelig — hindering light to pass through
  • Occitan: opac — hindering light to pass through
  • Polish: nieprzezroczysty — hindering light to pass through
  • Polish: nieprzejrzysty — hindering light to pass through
  • Portuguese: opaco — hindering light to pass through
  • Romanian: netransparent — hindering light to pass through
  • Romanian: opac — hindering light to pass through
  • Russian: ма́товый (mátovyj) — hindering light to pass through
  • Russian: непрозра́чный (neprozráčnyj) — hindering light to pass through
  • Serbo-Croatian: neproziran — hindering light to pass through
  • Serbo-Croatian: neprozirno — hindering light to pass through
  • Serbo-Croatian: neprogledno — hindering light to pass through
  • Serbo-Croatian: neprovidno — hindering light to pass through
  • Spanish: opaco — hindering light to pass through
  • Swedish: ogenomskinlig — hindering light to pass through
  • Thai: ทึบแสง (tʉ́p-sɛ̌ɛng) — hindering light to pass through
  • Turkish: mat — hindering light to pass through
  • Turkish: opak — hindering light to pass through
  • Turkish: donuk — hindering light to pass through
  • Ukrainian: непрозо́рий (neprozóryj) — hindering light to pass through
  • Bulgarian: ма́тов (mátov) — allowing little light to pass through
  • German: trüb — allowing little light to pass through
  • German: trübe — allowing little light to pass through
  • German: milchig — allowing little light to pass through
  • Hungarian: homályos — allowing little light to pass through
  • Hungarian: halvány — allowing little light to pass through
  • Italian: offuscato — allowing little light to pass through
  • Bulgarian: неясен (nejasen) — unclear, unintelligible, hard to get or explain the meaning of
  • German: unklar — unclear, unintelligible, hard to get or explain the meaning of
  • German: schleierhaft — unclear, unintelligible, hard to get or explain the meaning of
  • German: unverständlich — unclear, unintelligible, hard to get or explain the meaning of
  • German: unverstanden — unclear, unintelligible, hard to get or explain the meaning of
  • Hungarian: homályos — unclear, unintelligible, hard to get or explain the meaning of
  • Hungarian: ködös — unclear, unintelligible, hard to get or explain the meaning of
  • Hungarian: érthetetlen — unclear, unintelligible, hard to get or explain the meaning of
  • Italian: arcano — unclear, unintelligible, hard to get or explain the meaning of
  • Italian: oscuro — unclear, unintelligible, hard to get or explain the meaning of
  • Bulgarian: тъп (tǎp) — obtuse, stupid
  • German: stumpf — obtuse, stupid
  • German: begriffsstutzig — obtuse, stupid
  • German: schwerfällig — obtuse, stupid
  • Hungarian: tompa — obtuse, stupid
  • Hungarian: bamba — obtuse, stupid
  • Hungarian: nehéz felfogású — obtuse, stupid
  • Romanian: obtuz — obtuse, stupid
  • Bulgarian: мрак (mrak) — area of darkness
  • German: Undurchsichtigkeit — area of darkness
  • German: Trübnis — area of darkness
  • German: Dunkelheit — area of darkness
  • German: verschleiern — area of darkness
  • German: Undurchsichtiges — something which is opaque
  • German: Blickdichtes — something which is opaque
  • Bulgarian: правя матов (pravja matov) — to render opaque
  • German: trüben — to render opaque
  • German: mattieren — to render opaque
  • German: verdunkeln — to render opaque
  • German: verschleiern — to render opaque
  • Spanish: opacar — to render opaque
Real reading context

opaque in complete knowledge articles