Find Synonyms

caustic Synonyms

Another word for caustic

Choosing another word for caustic depends on context, so the 17 synonyms and similar words below are separated across 3 exact definitions and ranked by match strength.
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• adjective (Context 1)

Sarcastic in a scathing, bitter, or severely critical way.

Usage Example

"The critic's scathing review of the play left the director visibly shaken."

Strongest
scathing
acerbic
mordant
trenchant
vitriolic
biting
Strong
cutting
sarcastic
acrimonious
sharp

• adjective (Context 2)

Able to burn, corrode, or destroy organic tissue by chemical action; strongly alkaline.

Usage Example

"Laboratory technicians must wear heavy protective gloves when handling corrosive solutions like sodium hydroxide."

Strongest
corrosive
Strong
erosive
alkaline
burning
acrid
mordant

• noun (Context 3)

A chemical substance that burns or destroys organic tissue, especially a strong alkali such as sodium hydroxide.

Usage Example

"The drain cleaner contains a powerful corrosive designed to dissolve grease and hair."

Strongest
corrosive
Strong
alkali
lye

Opposites of caustic

The opposite of caustic shifts depending on context. Common opposites include:

noncorrosive
gentle
mild
inert
kind
complimentary
flattering
neutral
See all opposites of caustic

• Nearby Words

causelessly
causer
causeway
caustic
caustically
cauterize
caution

Cite this Entry

Wordmom. (2026). Synonyms for Caustic. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/caustic
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