verb (used with or without object), funned, fun·ning,
  1. Informal. joke; kid.
adjective, fun·ner, fun·nest.
  1. Informal. of or relating to fun, especially to social fun: a fun thing to do; really a fun person; the funnest game.
  2. Informal. whimsical; flamboyant: The fashions this year are definitely on the fun side.
  1. for/in fun, as a joke; not seriously; playfully: His insults were only in fun.
  2. like fun, Informal. certainly not; of doubtful truth: He told us that he finished the exam in an hour. Like fun he did!
  3. make fun of, to make the object of ridicule; deride: The youngsters made fun of their teacher.

Origin of fun

1675–85; dialectal variant of obsolete fon to befool. See fond1

Synonyms for fun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for like fun


  1. a source of enjoyment, amusement, diversion, etc
  2. pleasure, gaiety, or merriment
  3. jest or sport (esp in the phrases in or for fun)
  4. fun and games facetious, ironic amusement; frivolous activity
  5. like fun informal
    1. (adverb)quickly; vigorously
    2. (interjection)not at all! certainly not!
  6. make fun of or poke fun at to ridicule or deride
  7. (modifier) full of amusement, diversion, gaiety, etca fun sport
verb funs, funning or funned
  1. (intr) informal to act in a joking or sporting manner

Word Origin for fun

C17: perhaps from obsolete fon to make a fool of; see fond 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 like fun



"diversion, amusement," 1727, earlier "a cheat, trick" (c.1700), from verb fun (1680s) "to cheat, hoax," of uncertain origin, probably a variant of Middle English fonnen "befool" (c.1400; see fond).

Stigmatized by Johnson as "a low cant word." Older sense is preserved in phrase to make fun of (1737) and funny money "counterfeit bills" (1938, though this may be more for the sake of the rhyme). See also funny.

Online Etymology Dictionary, © 2010 Douglas Harper

Idioms and Phrases with like fun

like fun

Not really, certainly not. For example, She said she'd been skiing for years—like fun she had! or Do I want to eat raw oysters—like fun I do. This expression originated in the early 1800s with a quite different meaning, “energetically” or “vigorously,” a sense now obsolete. Its present sense dates from the 1900s. Also see for fun.


In addition to the idiom beginning with fun

  • fun and games
  • funny bone
  • funny business
  • funny money

also see:

  • for fun
  • like fun
  • make fun of
  • more fun than a barrel of monkeys

Also see underfunny.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.