Sour or bitter tasting; acid. See Synonyms at bitter.
Sharp or biting, as in character or expression: "At times, the playwright allows an acerbic tone to pierce through otherwise arid or flowery prose” ( Alvin Klein).
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.