1. Sour, with bitterness and astringency.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• zcerb,
• scerb,
• wcerb,
• qcerb,
• axerb,
• averb,
• aferb,
• aderb,
• acwrb,
• acsrb,
• acserb,
• acesrb,
• acereb,
• acerbb,
• aserb,
• acerab,
• asserb,
• acherb,
• acerbe,
• acherbe

• acrobat,
• acerbity,
• acerbate,
• acerbic.

The adjective form of "acerb" is "acerbic".