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

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

Over several decades, hundreds and hundreds of tons — hundreds of thousands of gallons — of acid waste from the pesticide DDT and even DDT itself were dumped into the ocean off the Palos Verdes Peninsula and near Catalina Island. — Patt Morrison, Los Angeles Times, 15 July 2026

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