adjective (prettier, prettiest)
adverb[as submodifier] informal
noun (plural pretties)informal
verb (pretties, prettying, prettied)[with object]
Old English prættig; related to Middle Dutch pertich 'brisk, clever', obsolete Dutch prettig 'humorous, sporty', from a West Germanic base meaning 'trick'. The sense development 'deceitful, cunning, clever, skilful, admirable, pleasing, nice' has parallels in adjectives such as canny, fine, nice, etc.