say it: LUHK-ee
lucky is an adjective meaning "occurring by chance". It carries 3 recorded senses.
having or bringing good fortune
“my lucky day”
“a lucky man”
presaging or likely to bring good luck or a good outcome
“a favorable time to ask for a raise”
“lucky stars”
“a prosperous moment to make a decision”
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 lucky 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.