Meaning

adjective pleasing by delicacy or grace; not imposing

adjective (used ironically) unexpectedly bad

adverb to a moderately sufficient extent or degree

originFrom Middle English prety, preti, praty, prati, from Old English prættiġ (“tricky, crafty, sly, cunning, wily, astute”), from Proto-West Germanic *prattug, from Proto-Germanic *prattugaz (“boastful, sly, slick, deceitful, tricky, cunning”), corresponding to prat (“trick”) + -y. Doublet of pratty. Cognate with Dutch prettig (“nice, pleasant”), Low German prettig (“funny”), Icelandic prettugur…

Etymology from Wiktionary, CC BY-SA 3.0