What is the meaning of Acerbo?

acerbic

unripe, premature

acerbic, sour, bitter, harsh, crude

hard, severe

to make harsh or bitter, embitter

to augment or aggravate something disagreeable, make worse, exacerbate

acerbic (bitter to the taste)

first-person singular present indicative of acerbar

acerb (bitter to the taste)

acerbic (sour or bitter)

biting, scathing, acerbic

Source: wiktionary.org