from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To render less intense, sensitive, or vigorous: a medication to deaden the pain; wall tiles that deaden the sound from the rehearsal studio.
- transitive v. To make soundproof.
- transitive v. To make less colorful or brilliant.
- intransitive v. To become dead.
- intransitive v. To lose vigor, brilliance, or liveliness.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To render less lively; to diminish; to muffle.
- v. To become less lively; to diminish (by itself).
- v. To make soundproof.
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To make as dead; to impair in vigor, force, activity, or sensation; to lessen the force or acuteness of; to blunt
- transitive v. To lessen the velocity or momentum of; to retard.
- transitive v. To make vapid or spiritless.
- transitive v. To deprive of gloss or brilliancy; to obscure.
- transitive v. To render impervious to sound, as a wall or floor; to deafen.
from The Century Dictionary and Cyclopedia
- To make dead (in a figurative sense); render less sensitive, active, energetic, or forcible; impair the sensitiveness or the strength of; dull; weaken: as, to deaden sound; to deaden the force of a ball; to deaden the sensibilities.
- To retard; hinder; lessen the velocity or momentum of: as, to deaden a ship's way (that is, to retard her progress).
- To make impervious to sound, as a floor.
- To make insipid, flat, or stale: said of wine or beer.
- To deprive of gloss or brilliancy: as, to deaden gilding by a coat of size.
- To kill; especially, to kill (trees) by girdling.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. lessen the momentum or velocity of
- v. become lifeless, less lively, intense, or active; lose life, force, or vigor
- v. make vapid or deprive of spirit
- v. cut a girdle around so as to kill by interrupting the circulation of water and nutrients
- v. make vague or obscure or make (an image) less visible
- v. make less lively, intense, or vigorous; impair in vigor, force, activity, or sensation
- v. convert (metallic mercury) into a grey powder consisting of minute globules, as by shaking with chalk or fatty oil
dead + -en (Wiktionary)