Standard Lemma guide

adder

noun · 16 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.

  • US: /ˈædɚ/
  • Australia: Recorded audio is listed in the source snapshot.
  • rhymes with -ædə(ɹ)
  • CMU ARPABET: AE1 D ER0 Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

Any snake.

Definition source: English Wiktionary via Wiktextract

Usage: obsolete

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A name loosely applied to various snakes more or less resembling a viper.

A small venomous serpent of the genus Vipera

Definition source: English Wiktionary via Wiktextract

Usage: UK

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A name loosely applied to various snakes more or less resembling a viper.

A small venomous serpent of the genus Vipera

A common European adder (Vipera berus).

Definition source: English Wiktionary via Wiktextract

Usage: UK

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

A name loosely applied to various snakes more or less resembling a viper.

A puff adder, of Africa (genus Bitis).

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

A name loosely applied to various snakes more or less resembling a viper.

Any of several small nonvenomous snakes resembling adders

A milk snake (Lampropeltis triangulum).

Definition source: English Wiktionary via Wiktextract

Usage: Canada, US

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

A name loosely applied to various snakes more or less resembling a viper.

Any of several small nonvenomous snakes resembling adders

A hog-nosed snake, of genus Heterodon of harmless colubrid snakes found in North America

Definition source: English Wiktionary via Wiktextract

Usage: Canada, US

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

noun

Meaning 7

A name loosely applied to various snakes more or less resembling a viper.

Certain venomous snakes resembling other adders

Death adders (Acanthophis spp.), elapid snakes found in Southeast Asia and Australia

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

noun

Meaning 8

A name loosely applied to various snakes more or less resembling a viper.

Certain venomous snakes resembling other adders

A northern copperhead (Agkistrodon contortrix mokasen), a venomous viper found in the eastern United States

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

9

noun

Meaning 9

A sea stickleback or adder fish (Spinachia spinachia).

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

10

noun

Meaning 10

Someone who or something which performs arithmetic addition; a machine for adding numbers.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

11

noun

Meaning 11

An electronic device that adds voltages, currents or frequencies.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

12

noun

Meaning 12

Something which adds or increases.

Definition source: English Wiktionary via Wiktextract

Examples

  • They sought out cost adders with an eye toward eliminating them.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

13

noun

Meaning 13

A person who has attention deficit disorder.

Definition source: English Wiktionary via Wiktextract

Usage: informal

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

14

noun

Meaning 14

small terrestrial viper common in northern Eurasia

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: common viper, Vipera berus

Antonyms: none provided

Broader terms: viper

15

noun

Meaning 15

a machine that adds numbers

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: calculator, calculating machine

16

noun

Meaning 16

a person who adds numbers

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: calculator, reckoner, figurer, estimator, computer

History

Etymology

From Middle English nadder, addere, rebracketing of “a naddere” as “an addere”, from Old English nǣdre (“snake”), from Proto-West Germanic *nadrā, from Proto-Germanic *nadrǭ, from pre-Germanic *néh1treh2, variant of Proto-Indo-European *n̥h1trih2, from *(s)neh1- (“to spin, twist”). See also West Frisian njirre, Dutch adder, German Natter, Otter; also Welsh neidr, Latin natrīx (“watersnake”), Dutch naaien.

Etymology tree English add Proto-Indo-European *-yósder. Proto-Italic *-āzios Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English adder From add + -er.

From ADD + -er.

Across languages

Translations

105 source translations are retained for this English entry.

  • Afrikaans: adder — snake
  • Armenian: օձ (ōj) — snake
  • Asturian: culiebra — snake
  • Bulgarian: змия (zmija) — snake
  • Chinese Mandarin: 毒蛇 (dúshé) — snake
  • Chinese Mandarin: 蝰蛇 (kuíshé) — snake
  • Dutch: adder — snake
  • Finnish: käärme — snake
  • Galician: cóbrega — snake
  • Galician: pezoira — snake
  • Galician: liscáncere — snake
  • Galician: cobra — snake
  • Galician: quiobra — snake
  • Galician: becha — snake
  • Georgian: გველი (gveli) — snake
  • German: Natter — snake
  • Indonesian: senawan — snake
  • Irish: nathair — snake
  • Japanese: 毒蛇 (doku-hebi) — snake
  • Korean: 독사 (doksa) — snake
  • Low German: Adder — snake
  • Macedonian: шарка (šarka) — snake
  • Portuguese: cobra — snake
  • Portuguese: serpente — snake
  • Russian: змея́ (zmejá) — snake
  • Russian: гадю́ка (gadjúka) — snake
  • Sanskrit: पृदाकु (pṛdāku) — snake
  • Scottish Gaelic: nathair — snake
  • Serbo-Croatian: guja — snake
  • Sicilian: culorbia — snake
  • Sicilian: scursuni — snake
  • Spanish: serpiente — snake
  • Spanish: culebra — snake
  • Thai: อสรพิษ (à-sɔ̌ɔ-rá-pít) — snake
  • Thai: งู (nguu) — snake
  • Ukrainian: змія́ (zmijá) — snake
  • Zazaki: zıngırok — snake
  • Afrikaans: adder — viper
  • Akan: nanka — viper
  • Armenian: իժ (iž) — viper
  • Asturian: víbora — viper
  • Azerbaijani: gürzə — viper
  • Bulgarian: пепелянка (pepeljanka) — viper
  • Catalan: escurçó — viper
  • Chinese Mandarin: 蝰蛇 (kuíshé) — viper
  • Czech: zmije — viper
  • Danish: hugorm — viper
  • Dutch: adder — viper
  • Estonian: rästik — viper
  • Finnish: kyy — viper
  • French: vipère — viper
  • Galician: naia — viper
  • Galician: sacaveira — viper
  • Galician: áspide — viper
  • Galician: bichorro — viper
  • Georgian: გველგესლა (gvelgesla) — viper
  • German: Otter — viper
  • German: Viper — viper
  • German: Kreuzotter — viper
  • Greek: οχιά (ochiá) — viper
  • Greek: έχιδνα (échidna) — viper
  • Ancient Greek: ἔχιδνα (ékhidna) — viper
  • Ido: vipero — viper
  • Ingrian: jaadumato — viper
  • Ingrian: kirjava mato — viper
  • Ingrian: gadjukka — viper
  • Irish: nathair nimhe — viper
  • Italian: vipera — viper
  • Italian: marasso — viper
  • Japanese: クサリヘビ (kusari-hebi) — viper
  • Japanese: 鎖蛇 (kusari-hebi) — viper
  • Latin: aspis — viper
  • Latvian: odze — viper
  • Low German: Adder — viper
  • Low German: Krüüzadder — viper
  • Low German: Kriizadder — viper
  • Macedonian: гуја (guja) — viper
  • Eastern Mari: шемгишке (šemgiške) — viper
  • Western Mari: шим кӹшкӹ (šim kÿškÿ) — viper
  • Polish: żmija — viper
  • Portuguese: víbora — viper
  • Romanian: viperă — viper
  • Russian: гадю́ка (gadjúka) — viper
  • Sanskrit: पृदाकु (pṛdāku) — viper
  • Serbo-Croatian: guja — viper
  • Sicilian: lìpira — viper
  • Sicilian: scursuni — viper
  • Lower Sorbian: zmija — viper
  • Spanish: víbora — viper
  • Swedish: huggorm — viper
  • Turkish: engerek — viper
  • Ukrainian: гадю́ка (hadjúka) — viper
  • Esperanto: sumilo — what performs arithmetic addition
  • Esperanto: adiciilo — what performs arithmetic addition
  • Finnish: lisääjä — what performs arithmetic addition
  • Finnish: summain — what performs arithmetic addition
  • Japanese: 加算器 (kasanki) — what performs arithmetic addition
  • Portuguese: somador — what performs arithmetic addition
  • Portuguese: somadora — what performs arithmetic addition
  • Serbo-Croatian: zbrajač — what performs arithmetic addition
  • Serbo-Croatian: sumator — what performs arithmetic addition
  • Spanish: sumador — what performs arithmetic addition
  • Finnish: lisääjä — what increases
  • Portuguese: somador — what increases
  • Portuguese: somadora — what increases
Real reading context

adder in complete knowledge articles