[ mouth-fool ]
See synonyms for: mouthfulmouthfuls on

noun,plural mouth·fuls.
  1. the amount a mouth can hold.

  2. the amount taken into the mouth at one time.

  1. a small quantity.

  2. Informal. a spoken remark of great truth, relevance, effectiveness, etc.: You said a mouthful!

  3. a long word or group of words, especially one that is hard to pronounce.

Origin of mouthful

1375–1425; late Middle English. See mouth, -ful

usage note For mouthful

See -ful.

Words Nearby mouthful Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use mouthful in a sentence

British Dictionary definitions for mouthful


/ (ˈmaʊθˌfʊl) /

nounplural -fuls
  1. as much as is held in the mouth at one time

  2. a small quantity, as of food

  1. a long word or phrase that is difficult to say

  2. British informal an abusive response

  3. informal, mainly US and Canadian an impressive remark (esp in the phrase say a mouthful)

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

Other Idioms and Phrases with mouthful


see say a mouthful.

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