Synonyms of acid

acid

adjective

1

as in acidic

causing or characterized by the one of the four basic taste sensations that is produced chiefly by acids

an acid-tasting medicine

Synonyms & Similar Words

• acidic
• sour
• acidulous
• vinegary
• tart
• sourish
• dry
• soured
• tartish
• unsweetened
• tangy
• pungent
• zesty
• astringent
• zestful
• zingy
• sharp
• puckery
• hyperacid

Antonyms & Near Antonyms

• sweet
• smooth
• bland
• flat
• insipid
• tasteless
• weak
• thin
• dilute
• watery
• flavorless
• zestless
• savorless

2

as in angry

having or showing a habitually bad temper

with her acid personality, my aunt could be relied upon to bring some much-needed balance to the holiday gush

Synonyms & Similar Words

• angry
• irritable
• bilious
• dyspeptic
• splenetic
• disagreeable
• ornery
• cantankerous
• surly
• mad
• ill-humored
• exasperated
• peppery
• ill-natured
• indignant
• ill-tempered
• bloody-minded
• bearish
• upset
• choleric
• petulant
• depressed
• irascible
• querulous
• snappish
• uptight
• anal
• crotchety
• grouchy
• irate
• testy
• peevish
• contentious
• grumpy
• crabby
• morose
• sullen
• dour
• touchy
• cussed
• short-tempered
• cranky
• fussy
• contrary
• quick-tempered
• snippy
• argumentative
• glum
• old-maidish
• schoolmarmish

Antonyms & Near Antonyms

• pleasant
• sweet
• amiable
• gentle
• friendly
• benign
• agreeable
• congenial
• kind
• content
• amicable
• effervescent
• nice
• good-natured
• good-humored
• cheerful
• joyful
• exuberant
• bubbly
• lively
• vivacious
• lighthearted
• cheery
• calm
• happy
• good-tempered
• glad
• placid
• serene
• patient
• tolerant
• high-spirited
• long-suffering

3

as in sarcastic

marked by the use of wit that is intended to cause hurt feelings

a cultural gadfly known for an acid tongue that spares no one

Synonyms & Similar Words

• acidic
• sarcastic
• satiric
• barbed
• corrosive
• caustic
• biting
• acrid
• acidulous
• acerbic
• mordant
• sardonic
• pungent
• tart
• cutting
• sharp
• scathing
• ironic
• acerb
• cynical
• scalding
• sour
• harsh
• snarky
• smart-aleck
• dry
• smart-alecky
• cross
• blunt
• concise
• smart-mouthed
• severe
• spiky
• brisk
• incisive
• trenchant
• poignant
• wry
• vitriolic
• flippant
• facetious
• sourish
• acrimonious
• bitter
• stringent
• keen
• tartish
• abrupt
• gruff
• resentful
• sharp-tongued
• crisp
• pithy
• curt
• succinct
• tongue-in-cheek
• brusque
• rough
• terse
• insincere
• backhanded
• snippy
• snippety

Antonyms & Near Antonyms

• mild
• playful
• amusing
• merry
• gentle
• bland
• smooth
• droll
• sportive
• diplomatic
• waggish
• polite
• urbane
• cordial
• good-natured
• genial
• suave
• hospitable
• good-humored
• affable
• gracious
• sociable

Example Sentences

Recent Examples of acid

The idea that these two would have a five-minute-or-less breakup conversation, then plop down on the couch and happily embark on an acid trip together, strains credulity a little, even for this bizarre, codependent friend group. — Ben Rosenstock, Vulture, 28 Aug. 2026

In a sequencer that resembled a large fridge, millions of short nucleic-acid fragments would be identified in the span of ten hours. — Jason Liebowitz, New Yorker, 25 Aug. 2026

Lithium-ion, lead-acid, sodium-ion and other technologies all have a role to play in the electrification landscape. — Darren Tan, Forbes.com, 20 July 2026

Three teenagers have been arrested in connection with an acid attack on six women in Jersey City, New Jersey, last month, public safety officials said. — Mirna Alsharif, NBC news, 15 July 2026