任す: entrust / 負かす: defeat

entrust

entirely; all

everything, all

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

to defeat (someone); to win against (someone)

everything

(colloquial) current boyfriend