Adder

/ˈædɚ/ noun, slang

noun, slang ·Moderate ·High school level

Meaning at a glance

  • Primary sense: Any snake.
  • Grammar: adder is listed as noun, slang.
  • Nearest alternatives: accountant, common viper, computer, mathematician.
  • Useful contrasts: nonvenomous snake, subtracter, subtractor.
  • Usage evidence: The common adder is ovoviviparous.

How to use "adder"

  1. Start with the primary definition, then check the part of speech before placing the word in a sentence.
  2. Compare nearby synonyms to make sure "adder" carries the exact meaning, tone, and strength you need.
  3. Use the example sentence as a context check. If your sentence uses the word differently, confirm that the grammar still fits.

Meaning check

  • Does the word fit the sentence's grammar?
  • Does it match the intended tone rather than only the dictionary definition?
  • Would a simpler synonym be clearer for the reader?
  • Is there enough surrounding context to prevent ambiguity?

Source and review context

This entry combines structured lexical data with WordToolSet review checks. Definitions, examples, synonyms, and usage notes may come from different source tables, so the page is designed to show evidence from more than one angle before you rely on "adder" in a final draft.

If a word has several senses, prefer the sense that matches your sentence's grammar and surrounding context. A correct definition can still be the wrong choice when the sentence needs a different register, emphasis, or level of specificity.

Before you rely on this definition

Read the first definition as a starting point, then check the example, synonyms, and part of speech before treating "adder" as the right word for your sentence.

If your draft is formal, technical, persuasive, or sensitive, compare "adder" with a nearby alternative so the final choice matches both meaning and reader expectation.

Compare nearby meanings

  • Use synonyms when you need a softer, stronger, simpler, or more specific word.
  • Use antonyms to check the boundary of the meaning and avoid accidental contrast.
  • Use the example sentence to confirm the word behaves naturally in context.
  • Keep the original wording when a replacement adds complexity without improving precision.

Definition decision workflow

1. Identify the role

Check whether "adder" is acting as noun, slang in your sentence. A definition is only useful when the grammar matches the way the word is being used.

2. Test the nearest option

Compare it with "accountant" and other nearby choices to see whether the sentence needs a softer, stronger, or more familiar word.

3. Confirm with context

Use the example sentence below as an evidence check, then read your own sentence out loud to catch tone or rhythm problems.

Review note: Definition pages are checked for source coverage, sentence evidence, synonym support, and editorial insight before they are treated as approval-ready pages. If the evidence is too thin, the page remains available to users but is kept out of the approval-facing indexed inventory.

Final meaning check

Before publishing a sentence with "adder", ask whether the word helps the reader understand the idea faster. A precise word should reduce confusion, not simply make the sentence look more polished.

When the definition, synonym evidence, and example context point in the same direction, the word is usually a safer choice. When they conflict, revise the sentence or choose a clearer alternative.

Definitions

Noun
  1. 1
    Any snake. obsolete

    "CALIBAN: His spirits hear me, / And yet I needs must curse. But they'll nor pinch / Fright me with urchin-shows, pitch me i'th' mire, / Nor lead me like a firebrand in the dark / Out of my way, unless he bid 'em; but / For every trifle are they set upon me, / Sometimes like apes that mow and chatter at me, / And after bite me; then like hedgehogs, which / Lie tumbling in my barefoot way, and mount / Their pricks at my footfall; sometimes am I / All wound with adders, who with their cloven tongues / Do hiss me into madness—"

  2. 2
    Someone who or something which performs arithmetic addition; a machine for adding numbers.
  3. 3
    A person who has attention deficit disorder. informal

    "Many ADDers become targets for bullies and are routinely harassed at school."

  4. 4
    small terrestrial viper common in northern Eurasia wordnet
  5. 5
    A name loosely applied to various snakes more or less resembling a viper.; A small venomous serpent of the genus Vipera British

    "Entirely filled with the image of another, her heart, indeed, had the deaf ear of the adder, which heedeth not the voice of the charmer, charm he never so wisely."

Show 11 more definitions
  1. 6
    An electronic device that adds voltages, currents or frequencies.
  2. 7
    a machine that adds numbers wordnet
  3. 8
    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). British
  4. 9
    Something which adds or increases.

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

  5. 10
    a person who adds numbers wordnet
  6. 11
    A name loosely applied to various snakes more or less resembling a viper.; A puff adders, of Africa (genus Bitis).
  7. 12
    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). Canada, US
  8. 13
    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 Canada, US
  9. 14
    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
  10. 15
    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
  11. 16
    A sea stickleback or adder fish (Spinachia spinachia).

Antonyms

nonvenomous snakesubtractersubtractor

Example

"The common adder is ovoviviparous."

Common questions

What does "adder" mean?

Any snake.

What is a synonym for "adder"?

Common synonyms include: accountant, common viper, computer, mathematician, parts, relay.

How do you use "adder" in a sentence?

The common adder is ovoviviparous.

How do you pronounce "adder"?

Pronounced /ˈædɚ/.

Etymology

Etymology 1

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 2

From add + -er.

Etymology 3

From ADD + -er.

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