say it: uh-FER
affair is a noun meaning "a vaguely specified concern". It carries 3 recorded senses.
a vaguely specified social event
“the party was quite an affair”
“an occasion arranged to honor the president”
“a seemingly endless round of social functions”
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 affair 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.