I think this word means: bitter and unpleasent tasting… like the taste of congealed coffee at the bottom of the pot after it’s been sitting all day.

Actual definiton:

acrid \AK-rid, adjective:

1. Sharp and harsh, or bitter to the taste or smell; pungent.
2. Caustic in language or tone; bitter.

Remark: My definition of acrid was pretty acrid.