君は勝手に出かけていいよ。

you; buddy; pal; monarch; ruler; sovereign; (one's) master

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

one's own convenience; one's way; convenience or ease of use; knowledge of how to use; circumstances; situation (e.g. financial); environment; kitchen; arbitrary; unauthorised (e.g. phone app, WWW site); unofficial

at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although

to go out (e.g. on an excursion or outing); to leave; to depart; to start; to set out; to be about to leave; to be just going out

good; excellent; fine; nice; pleasant; agreeable; sufficient (can be used to turn down an offer); ready; prepared; profitable (e.g. deal, business offer, etc.); beneficial; OK

indicates certainty, emphasis, contempt, request, etc.; used when calling out to someone; used to catch one's breath or get someone's attention; yo!