from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To make hard or harder.
- transitive v. To enable to withstand physical or mental hardship.
- transitive v. To make unfeeling, unsympathetic, or callous: "To love love and not its meaning hardens the heart in monstrous ways” ( Archibald MacLeish).
- transitive v. To make sharp, as in outline.
- transitive v. To protect (nuclear weapons) by surrounding with earth or concrete.
- intransitive v. To become hard or harder.
- intransitive v. To rise and become stable. Used of prices.
- intransitive v. To become inured.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To become hard (tough, resistant to pressure).
- v. To make something hard or harder (tough, resistant to pressure).
- v. To become or make a person or thing resistant or less sensitive.
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To make hard or harder; to make firm or compact; to indurate.
- transitive v. To accustom by labor or suffering to endure with constancy; to strengthen; to stiffen; to inure; also, to confirm in wickedness or shame; to make unimpressionable.
- intransitive v. To become hard or harder; to acquire solidity, or more compactness.
- intransitive v. To become confirmed or strengthened, in either a good or a bad sense.
from The Century Dictionary and Cyclopedia
- To make hard or more hard in substance or texture; make firm or compact; indurate: as, to harden steel, clay, or tallow; to harden the hands or muscles by toil.
- To dry (clothes) by airing.
- To make hard or harder in feeling; strengthen or confirm with respect to any element of character; inure; toughen; especially, to make indifferent, unfeeling, obstinate, wicked, etc.
- Synonyms To accustom, discipline, train, toughen, habituate, steel, brace, nerve.
- To become hard or more hard; acquire solidity or compactness: as, mortar hardens in drying.
- To become inured or toughened; especially, to become unfeeling.
- To rise in price; grow dear: as, the market hardens.
- Of hards or inferior flax.
- n. Hards or inferior flax.
- n. A cloth of coarse fiber and texture, made from hards.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. make fit
- v. cause to accept or become hardened to; habituate
- v. harden by reheating and cooling in oil
- v. become hard or harder
- v. make hard or harder
hard + -en (Wiktionary)