say it: PRIT-ee
pretty is an adjective and adverb meaning "pleasing by delicacy or grace; not imposing". It carries 3 recorded senses.
to certain extent or degree
“pretty big”
“pretty bad”
“jolly decent of him”
“the shoes are priced reasonably”
“he is fairly clever with computers”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for pretty come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.