occasion

[1]	give rise to , bring about , cause , bring on , effect , prompt , provoke , evoke , call forth , elicit , call up , induce , impel , create , generate , engender , produce , make (for)

[1]	juncture , time , moment , circumstance , incident , occurrence , opportunity , chance , opening , advantage
[2]	reason , affair , social occasion , cause , call , function , social function , justification , ground(s) , warrant , provocation , prompting , impulse , stimulus , incitement , inducement
[3]	event , function , happening , affair , observance , commemoration , ceremony , celebration , gala , party
[4]	on occasion , occasionally