come on v.1
1. [mid-19C+] (orig. US) to seem, to appear, to behave; always modified, usu. by an adj. used adverbially, e.g. come on tough, come on nasty etc.
2. see come on strong
[1940s] (US black/Harlem) to act in a speedy, efficient manner.
1. [20C+] to speak aggressively, forcefully; to make one’s presence and opinions felt; used both positively and negatively, the latter often as come on too strong.
2. [1950s+] to be seductive.