caustic

/ˈkɔːstɪk/ · KAW-stikadjective

Able to burn or corrode; figuratively, sharply sarcastic, bitter, or cutting.

Use caustic to express this relationship precisely: able to burn or corrode; figuratively, sharply sarcastic, bitter, or cutting.

What caustic Really Means

The word becomes easier to use when its closely related senses are separated and compared.

1

Core quality

Able to burn or corrode; figuratively, sharply sarcastic, bitter, or cutting.

Example

Workers wore gloves when handling the caustic solution.

2

Attributive or predicative use

Use this adjective before a suitable noun or after a linking verb such as be or seem.

Example

Her caustic review mocked the author's pretensions.

3

Analytical distinction

Choose it when this exact descriptive quality matters; a related word may overlap without conveying the same trait.

Example

The debate was pointed but not caustic.

Use caustic Naturally

Notice how the surrounding noun or clause reveals the exact shade of meaning.

Workers wore gloves when handling the caustic solution.

Her caustic review mocked the author's pretensions.

The debate was pointed but not caustic.

Precision Matters

Caustic overlaps with several common words, but each carries a different emphasis.

caustic

Means able to burn or corrode; figuratively, sharply sarcastic, bitter, or cutting.

vs.
cordial

Means warm, friendly, sincere, and polite in manner or relations.

caustic

Means able to burn or corrode; figuratively, sharply sarcastic, bitter, or cutting.

vs.
emollient

Means soothing, softening, or calming, especially to irritated skin or tense feelings.

caustic

Means able to burn or corrode; figuratively, sharply sarcastic, bitter, or cutting.

vs.
temperate

Means moderate, restrained, and not extreme; in climate, mild rather than very hot or cold.

caustic

Means able to burn or corrode; figuratively, sharply sarcastic, bitter, or cutting.

vs.
vitriolic

Means filled with bitter hatred, venomous hostility, or extremely harsh criticism.

Test caustic in Context

The language is bitter, cutting, and verbally stinging.

1

The critic's ___ comments were intended to wound rather than merely disagree.

Prepared byFirst Academy
Editorial responsibilityFirst Academy Academic Team
Updated3 August 2026
Selection and reviewRead our methodology