deadly

Meanings

1. 1
   adj

   of an instrument of certain death

   deadly poisons

2. 2
   adj

   involving loss of divine grace or spiritual death

   the seven deadly sins

3. 3
   adj

   Subject to death; mortal.

   […]he ſuffred hym ſelfe to be made mortall and dedly, that innocent & gyltles in hym ſelfe: he myght be ſlayne & deye for the gylty man.

4. 4
   adj

   Causing death; lethal.

   But then I had the [massive] flintlock by me for protection. ¶[…]The linen-press and a chest on the top of it formed, however, a very good gun-carriage; and, thus mounted, aim could be taken out of the window[…], and a 'bead' could be drawn upon Molly, the dairymaid, kissing the fogger behind the hedge, little dreaming that the deadly tube was levelled at them.

5. 5
   adj

   Aiming or willing to destroy; implacable; desperately hostile.

   deadly enemies

6. 6
   adj

   Very accurate (of aiming with a bow, firearm, etc.).

   Its deadly aim at vast distances, which condition of the mechanical power brought has made it the dread of the sepoys, who term it "the gun that kills without making any sound," contrasts strangely with the performances of Brown Bess of old, which at any range beyond a hundred yards was so uncertain in its aim that it has been calculated that the soldier shot away the weight in lead of every man that he hit.

7. 7
   adj

   Very boring.

   “I don't mean all of your friends—only a small proportion—which, however, connects your circle with that deadly, idle, brainless bunch—the insolent chatterers at the opera, the gorged dowagers, the worn-out, passionless men, the enervated matrons of the summer capital,[…]!”

8. 8
   adv

   Fatally, mortally.

   [P]erceiving himſelfe deadly wounded by a ſhot received in his body, being by his men perſwaded to come off and retire himſelfe from out the throng, anſwered, he would not now ſo neere his end, beginne to turne his face from his enemie[…]

Etymology

From Middle English dedly, dedlych, dedlich, from Old English dēadlīċ (adjective), from Proto-West Germanic *dauþalīk, from Proto-Germanic *dauþalīkaz (“deadly”, literally “deathly”). By surface analysis, dead + -ly. Cognate with Saterland Frisian dodelk (“deadly”), West Frisian deadlik (“deadly”), Dutch dodelijk (“deadly”), German tödlich (“deadly”), Swedish dödlig (“deadly, fatal, mortal”), Icelandic dauðlegur (“mortal”). The adverb is from Middle English dedliche, from Old English dēadlīċe (adverb), from the adjective.