Adjective

(en adjective)

Tasting sour or bitter.

* 1998 Aug. 5, Dr. Peter Gott, " Can inhaler cause addiction?," Catoosa County News (retrieved 19 Sep 2009):

Those consumers who object to the acerbic taste of garlic can purchase de-odorized garlic or allicin extract.

Sharp, harsh, biting.

* 1986 Sept. 22, " West Germany: Last Taunts From the Lip," Time (retrieved 25 Apr 2014):

Supercompetent, superconfident and supercritical, Schmidt is a gifted orator whose acerbic wit earned him the nickname "Schmidt the Lip."

* 2005 May 5, Jay Mathews, "Don't Fire This Professor," Washington Post , p. T6:

[H]e is one of the most acerbic people in his field, quick to take offense and not shy about telling people with whom he disagrees how much he thinks they have failed in thought and action.

Adjective

(er)

Unpleasantly rough to the touch or other senses.

Severe or cruel.

* {{quote-news

, year=2011 , date=November 5 , author=Phil Dawkes , title=QPR 2 - 3 Man City , work=BBC Sport citation , page= , passage=Great news for City, but the result was harsh on Neil Warnock's side who gave as good as they got even though the odds were stacked against them.}}