More sour, bitter, or harsh in taste, manner, or tone; sharper and more cutting than something else.
Comparative form of 'acerb' from Latin 'acerbus' (sour, harsh). The comparative form was created by adding '-er' to show a greater degree of the quality.
The root Latin word 'acerbus' literally described unripe fruit that puckered your mouth—but we still use it today to describe sharp-tongued people!
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