[1] : The Collaborative International Dictionary of English v.0.48

acerb \acerb"\, a. l. acerbus, fr. acer sharp: cf. f. acerbe.
   see acrid.
   sour, bitter, and harsh to the taste, as unripe fruit; sharp
   and harsh.
   1913 webster
see also:
acrid 

[2] : WordNet (r) 2.0

acerb
     adj 1: sour or bitter in taste syn: acerbic, astringent, sharp
     2: harsh or corrosive in tone; "an acerbic tone piercing
        otherwise flowery prose"; "a barrage of acid comments";
        "her acrid remarks make her many enemies"; "bitter words";
        "blistering criticism"; "caustic jokes about political
        assassination, talk-show hosts and medical ethics"; "a
        sulfurous denunciation" syn: acerbic, acid, acrid,
        bitter, blistering, caustic, sulfurous, sulphurous,
         venomous, virulent, vitriolic
see also:
acerbic astringent sharp acid acrid bitter 
blistering caustic sulfurous sulphurous venomous 
virulent vitriolic 

Acerb >> A Words
Acerb, definition of term: Acerb
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