adjective, if·fi·er, if·fi·est. Informal.

full of unresolved points or questions: an iffy situation.
doubtful; questionable: An early decision on this is iffy.

Origin of iffy

First recorded in 1915–20; if + -y1
Related formsif·fi·ness, noun

Synonyms for iffy

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for iffy

Contemporary Examples of iffy

British Dictionary definitions for iffy


adjective iffier or iffiest

informal uncertain or subject to contingencythis scheme sounds a bit iffy

Word Origin for iffy

C20: from if + -y 1
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 iffy

1937, American English, from if + -y (2). Originally associated with President Franklin D. Roosevelt.

Online Etymology Dictionary, © 2010 Douglas Harper