- acrylicDerived from acrylic acid or acrylonitrile.
- vinegarA sour liquid formed by the fermentation of alcohol used as a condiment or preservative; a dilute solution of acetic acid.
- acroleinA pungent, acrid, poisonous liquid aldehyde, CH₂=CH-CH=O, made by the destructive distillation of glycerol.
- acerbSour, bitter, and harsh to the taste, such as unripe fruit.