say it: gid-BAHY
good-bye is a noun meaning "a farewell remark". It is pronounced /ɡɪdˈbaɪ/ — gid-BAHY. It carries one recorded sense.
Definitions, synonyms and semantic relations for good-bye 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.