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 process produces both acid and base chemicals necessary for further processing. — Georgina Jedikovska, Interesting Engineering, 14 July 2026

Scotto highlighted that Kinetik has purpose-built its system for sour gas handling, giving it an edge over new competitors that may face permitting delays of at least three years to build acid gas injection wells. — Tipranks.com Staff, CNBC, 21 June 2026

On the other hand, a hydrangea species that can sometimes disappoint Chicago-area gardeners is the bigleaf hydrangea (Hydrangea macrophylla), known for having big blue blooms when grown in acid soil and popular in the eastern United States. — Beth Botts, Chicago Tribune, 20 June 2026

So, this is like an acid trip for me. — Glenn Garner, Deadline, 20 June 2026