adjective, nastier, nastiest.
physically filthy; disgustingly unclean: a nasty pigsty of a room.
offensive to taste or smell; nauseating.
offensive; objectionable: a nasty habit.
vicious, spiteful, or ugly: a nasty dog; a nasty rumor.
bad or hard to deal with, encounter, undergo, etc.; dangerous; serious: a nasty cut; a nasty accident.
very unpleasant or disagreeable: nasty weather.
morally filthy; obscene; indecent: a nasty word.
Slang. formidable: The young pitcher has a good fast ball and a nasty curve.
noun, plural nasties.
Informal. a nasty person or thing.

1350–1400; Middle English < ?

nastily, adverb
nastiness, noun

1. dirty, foul, loathsome. 2. sickening, repulsive, repellent. 6. stormy, inclement. 7. smutty, pornographic.

1. clean, pure. Unabridged


a combining form with the meaning “nastic pressure,” of the kind or in the direction specified by the initial element: hyponasty.

< Greek nast(ós) pressed close (see nastic) + -y3 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To nasty
World English Dictionary
nasty (ˈnɑːstɪ)
adj , -tier, -tiest
1.  unpleasant, offensive, or repugnant
2.  (of an experience, condition, etc) unpleasant, dangerous, or painful: a nasty wound
3.  spiteful, abusive, or ill-natured
4.  obscene or indecent
5.  informal (Brit) nasty piece of work a cruel or mean person
n , -tier, -tiest, -ties
6.  an offensive or unpleasant person or thing: a video nasty
[C14: origin obscure; probably related to Swedish dialect nasket and Dutch nestig dirty]

n combining form
indicating a nastic movement to a certain stimulus: nyctinasty
[from Greek nastos pressed down, close-pressed]
adj combining form

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Word Origin & History

c.1400, "foul, filthy, dirty, unclean," perhaps from O.Fr. nastre "bad, strange," shortened form of villenastre "infamous, bad," from vilein "villain" + -astre, pejorative suffix, from L. -aster. Alternative etymology is from Du. nestig "dirty," lit. "like a bird's nest." Likely reinforced by a Scand.
source (cf. Swed. dial. naskug "dirty, nasty"). Of weather, from 1634; of things generally, "unpleasant, offensive," from 1705. Of people, "ill-tempered," from 1825.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Example sentences
Southwestern has suffered from a revolving leadership and nasty battles between
  administrators, faculty members, and students.
There you have it: the ingredients of a nasty crash.
Movie mummies are known for two things: fabulous riches and a nasty curse that
  brings treasure hunters to a bad end.
But please, continue to believe that labeling other people with nasty
  adjectives is a rational argument.
Copyright © 2014, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature