- to make hard or harder: to harden steel.
- to make pitiless or unfeeling: to harden one's heart.
- to make rigid or unyielding; stiffen: The rigors of poverty hardened his personality.
- to strengthen or confirm, especially with reference to character, intentions, feelings, etc.; reinforce.
- to make hardy, robust, or capable of endurance; toughen.
- Military. to reinforce the structure of (a military or strategic installation) to protect it from nuclear bombardment.
- to become hard or harder.
- to become pitiless or unfeeling.
- to become rigid or unyielding; stiffen: His personality hardened over the years.
- to become confirmed or strengthened: His resistance hardened.
- to become inured or toughened: The troops hardened under constant fire.
- Commerce. (of a market, prices, etc.)
- to cease to fluctuate; firm: When the speculators withdrew from the market, the prices hardened.
- to rise higher.
Origin of harden
Synonyms for harden
Antonyms for harden
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- to make or become hard or harder; freeze, stiffen, or set
- to make or become more hardy, tough, or unfeeling
- to make or become stronger or firmerthey hardened defences
- to make or become more resolute or sethardened in his resolve
- (intr) commerce
- (of prices, a market, etc) to cease to fluctuate
- (of price) to rise higher
- a rough fabric made from hards
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 hardenable
Online Etymology Dictionary, © 2010 Douglas Harper