deadly

[ded-lee]
See more synonyms for deadly on Thesaurus.com
adjective, dead·li·er, dead·li·est.
  1. causing or tending to cause death; fatal; lethal: a deadly poison.
  2. aiming to kill or destroy; implacable: a deadly enemy.
  3. like death: a deadly pallor.
  4. excruciatingly boring: The dinner party was absolutely deadly.
  5. excessive; inordinate: deadly haste.
  6. extremely accurate: Annie Oakley was a deadly shot.
adverb
  1. in a manner resembling or suggesting death: deadly pale.
  2. excessively; completely: deadly dull.

Origin of deadly

before 900; Middle English deedli(ch), Old English dēadlīce. See dead, -ly
Related formsdead·li·ness, nounnon·dead·ly, adjective
Can be confuseddeadly deathly

Synonyms for deadly

See more synonyms for on Thesaurus.com
1. See fatal. 4. dull, tedious, tiresome.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018


Examples from the Web for deadliest

Contemporary Examples of deadliest

Historical Examples of deadliest

  • After all, I was her only boy, and it was to war in its deadliest form that I was going.

    In the Valley

    Harold Frederic

  • In an Italian town he is always at work, and always thumping in the deadliest manner.

  • Look at the tastes and habits of our age—the deadliest enemies of true religion!

    The Christian

    Hall Caine

  • If the cloud were no bigger than a man's hand, it was charged with deadliest lightning.

    Gerald Fitzgerald

    Charles James Lever

  • Could settle the deadliest quarrel in the country by crooking his little finger.

    Lord Jim

    Joseph Conrad


British Dictionary definitions for deadliest

deadly

adjective -lier or -liest
  1. likely to cause deathdeadly poison; deadly combat
  2. informal extremely boring
adverb, adjective
  1. like death in appearance or certaintydeadly pale; a deadly sleep
Derived Formsdeadliness, noun
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 deadliest

deadly

adj.

Old English deadlic "mortal, subject to death," also "causing death;" see dead + -ly (1). Meaning "having the capacity to kill" is from late 14c. (Old English words for this included deaðbærlic, deaðberende).

Online Etymology Dictionary, © 2010 Douglas Harper