molehill

[mohl-hil]
Idioms
  1. make a mountain out of a molehill, to exaggerate a minor difficulty.

Origin of molehill

late Middle English word dating back to 1400–50; see origin at mole1, hill
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for make a mountain out of a mole-hill

molehill

noun
  1. the small mound of earth thrown up by a burrowing mole
  2. make a mountain out of a molehill to exaggerate an unimportant matter out of all proportion
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 make a mountain out of a mole-hill

molehill

n.

also mole-hill, mid-15c., from mole (2) + hill (n.).

To much amplifying thinges yt. be but small, makyng mountaines of Molehils. [John Foxe, "Acts and Monuments," 1570]
Online Etymology Dictionary, © 2010 Douglas Harper

Idioms and Phrases with make a mountain out of a mole-hill

molehill

see make a mountain out of a molehill.

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