'Pretty' definitions:

Definition of 'pretty'

(from WordNet)
adverb
To a moderately sufficient extent or degree; "pretty big"; "pretty bad"; "jolly decent of him"; "the shoes are priced reasonably"; "he is fairly clever with computers" [syn: reasonably, moderately, pretty, jolly, somewhat, fairly, middling, passably] [ant: immoderately, unreasonably]
adjective
Pleasing by delicacy or grace; not imposing; "pretty girl"; "pretty song"; "pretty room"
adjective
(used ironically) unexpectedly bad; "a pretty mess"; "a pretty kettle of fish"

Definition of 'Pretty'

From: GCIDE
  • Pretty \Pret"ty\, adv. In some degree; moderately; considerably; rather; almost; -- less emphatic than very; as, I am pretty sure of the fact; pretty cold weather. [1913 Webster]
  • Pretty plainly professes himself a sincere Christian. --Atterbury. [1913 Webster]

Definition of 'Pretty'

From: GCIDE
  • Pretty \Pret"ty\, a. [Compar. Prettier; superl. Prettiest.] [OE. prati, AS. pr[ae]ttig, pr[ae]tig, crafty, sly, akin to pr[ae]t, pr[ae]tt, deceit, trickery, Icel. prettugr tricky, prettr a trick; probably fr. Latin, perhaps through Celtic; cf. W. praith act, deed, practice, LL. practica execution, practice, plot. See Practice.]
  • 1. Pleasing by delicacy or grace; attracting, but not striking or impressing; of a pleasing and attractive form a color; having slight or diminutive beauty; neat or elegant without elevation or grandeur; pleasingly, but not grandly, conceived or expressed; as, a pretty face; a pretty flower; a pretty poem. [1913 Webster]
  • This is the prettiest lowborn lass that ever Ran on the greensward. --Shak. [1913 Webster]
  • 2. Moderately large; considerable; as, he had saved a pretty fortune. "Wavering a pretty while." --Evelyn. [1913 Webster]
  • 3. Affectedly nice; foppish; -- used in an ill sense. [1913 Webster]
  • The pretty gentleman is the most complaisant in the world. --Spectator. [1913 Webster]
  • 4. Mean; despicable; contemptible; -- used ironically; as, a pretty trick; a pretty fellow. [1913 Webster]
  • 5. Stout; strong and brave; intrepid; valiant. [Scot.] [1913 Webster]
  • [He] observed they were pretty men, meaning not handsome. --Sir W. Scott. [1913 Webster]
  • Syn: Elegant; neat; fine. See Handsome. [1913 Webster]