bitter

ˈbidər

1. adjective – having a sharp, pungent taste or smell; not sweet.
2. adjective – feeling or showing anger, hurt, or resentment because of bad experiences or a sense of unjust treatment.
3. adjective – painful or unpleasant to accept or contemplate.
4. adjective – (of wind or weather) intensely cold.
5. noun – alcohol flavoured with bitter plant extracts, used as an additive in cocktails or as a medicinal substance to promote appetite or digestion.