noun Slang.

an extremely incompetent, eccentric, or silly person.
a pill containing a barbiturate or a tranquilizing drug.

Origin of goofball

First recorded in 1935–40; goof + ball1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for goofball

Contemporary Examples of goofball

British Dictionary definitions for goofball


noun US and Canadian slang

a barbiturate sleeping pill
a fool
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for goofball

"narcotic," 1938, from goof + ball (n.1); as an intensive of goof (n.), it dates from 1959.

Online Etymology Dictionary, © 2010 Douglas Harper

goofball in Medicine



A barbiturate or tranquilizer in the form of a pill, especially when taken for nonmedical purposes.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.