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4. deadly
An adjective that means:

1. Can kill
2. Is able to kill
3. Yo' mamma
"This here snake is deadly, son. AHHH!!!"
"I fucked dealy last night."
1. Deadly
A word very commonly used by the irish to describe something beyond great.
Jamo's gaff is fuckin' deadly.
by Wezz Nov 17, 2004 add a video
2. deadly
Describes something that has the power to make you dead.
It was a deadly mistake for Dan to go bowling that day. The mysterious guy who hates bowling killed him.

Sega made a deadly mistake with the Sega saturn. It died and was unpopular.

The venom of that snake is quite deadly.
by Sega Slayer Sep 28, 2003 add a video
3. deadly
Irish form of "Brilliant"
That film was bleedin' deadly
by Cully Apr 1, 2003 add a video
5. deadly
Life threatening
Don't drink the poison, as it is deadly.
by Paul Sep 29, 2003 add a video
6. deadly
Something that can kill you. Fast. Like me.
SHIT MAN! That axe is deadly!
by Your Ass Sep 28, 2003 add a video
7. deadly
To "get deadly" means to take ecstasy.
Guy 1: hey Seánhead, are you gettin' deadly tonight?

Seánhead: I'm quite clearly off my face
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