Function: intransitive verb
Date: 15th century
1 a : to advance by degrees <darkness came on > b : to begin by degrees <rain came on toward noon>
2 a : PLEASE ― used in cajoling or pleading b ― used interjectionally to express astonishment, incredulity, or recognition of a put-on
3 : to project an indicated personal image < comes on as a conservative>
4 : to show sexual interest in someone also : to make sexual advances ― usually used with to <tried to come on to her>