Entry 2 senses · 2 variants Webster, 1913 Overtrust · O·ver·trust · IPA /ˌəʊvə(ɹ)ˈtɹʌst/ n. v. t. & i. 01 n. Excessive confidence. 1. Excessive confidence. 02 v. t. & i. To trust too much. 1. To trust too much.