- ACERB
- Biting
- Vinegary
- Like a sourball
- Sour
- Tart-tasting
- Biting, as humor, poetically
- Caustic, as criticism
- Acidic
- Caustic
- Tart in tone
- Acid-tongued
- Cutting
- Sour-tasting
- Bitter-tasting
- Sour in tone
- Sour in tone (5)
- Sour tasting, oldstyle
- Scathing
- Like a lemon
- Face-scrunching
- Harsh
- Bitter
- Harsh, as criticism
- Tangy
- Tart
- Tart of tone
- Acid
- Bitter to the taste
- Bitterly harsh
- Lemony
- Astringent
- Sharp
- In a sour mood
- Sharp-tasting
- Having a bite
- Severe, as criticism
- Sharp-tongued
- Astringent in taste
- Biting, as criticism
- Biting, as wit
- Very tart
- Cutting, as criticism
- Sarcastic
- Sour in taste
- Sour of flavor.
- Sharp and harsh.
- Sour and astringent.
- Cousin of 33 Across.
- Harsh and sharp.
- Pungent.
- Acid in mood.
- Unsweet.
- Bitingly ironic.
- Sharply critical.
- Sharply bitter
- Like green apples
- Very critical
- Acidulous
- Somewhat sour
- Lip-puckering
- Like unripe fruit
- Mordant
- Mouth-puckering
- Sharp, as criticism
- Bitter, in poetry
- Sharp, as a comment
- Sharply bitter, as a comment
- Bitter in taste
- Like lemon juice
- Like vinegar
- Like lemon juice (var.)
- Like immature fruit
- Like the taste of vinegar
- With a tart taste
- Acidic to the taste
- Sharp of tongue
- Ill-tempered
- Sharp in taste
- Sour or bitter in taste
- Harsh in taste
- Bitterly written
- Sardonic
- Bitter, literarily
