Other forms: entrusted, entrusting, entrusts
To entrust is to hand something over to somebody's care. Entrust him with the key, entrusted to her, entrust the money.
It takes two forms — entrust somebody with something, or entrust something to somebody — and both are correct. The trust is the point: what is entrusted is given on the understanding it will be looked after, which is why breaching it is a heavier charge than merely losing something. Note trust.
1verbentrustTo hand something over to somebody's care.
“She entrusted her neighbour with the keys to her flat while she was away.”
entrust is a handing over.
Proto-Indo-European
*deru- — be firm, hard, solid
Old English
*trust
Middle English
trust — trust, protection
English
trust
English, today
entrust
From en- + trust. trust comes from Middle English trust (“trust, protection”). Long considered a borrowing from Old Norse traust (“confidence, help, protection”), from Proto-Germanic traustą, but the root vocalism is incompatible, so trust has come to be considered a reflex of an unattested Old English trust, from a rare zero-grade Proto-Germanic variant of the same root also attested in Middle High German getrüste (“host”). Ultimately from Proto-Indo-European deru- (“be firm, hard, solid”). 2 Cognate with stq Traast (“comfort, solace”), West Frisian treast (“comfort, consolation, solace”), Dutch troost (“comfort, consolation”), German Trost (“comfort, consolation”), Low German Troost (“comfort, consolation”), lb Trouscht (“consolation”), Danish trøst (“comfort, solace”), Icelandic traust (“faith, trust; confidence”), Norwegian Nynorsk trøst, trøyst (“consolation”), Swedish tröst (“comfort, consolation”), Gothic 𐍄𐍂𐌰𐌿𐍃𐍄𐌹 (“covenant, pact”). a doublet of tryst. More at true, tree.
Etymology from Wiktionary, CC BY-SA