acrid
(ˈækrɪd) adjective 1 unpleasantly pungent or sharp to the smell or taste
2 sharp or caustic, esp in speech or nature
[C18: from Latin ācer sharp, sour; probably formed on the model of acid]
> acridity (əˈkrɪdɪtɪ) or ˈacridness noun
> ˈacridly adverb