"affair" in the noun sense
1. matter, affair, thing
a vaguely specified concern
"several matters to attend to"
"it is none of your affair"
"things are going well"
2. affair, affaire, intimacy, liaison, involvement, amour
a usually secretive or illicit sexual relationship
3. affair, occasion, social occasion, function, social function
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"
Source: WordNet® (An amazing lexical database of English)
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