mistrustless

Without mistrust or suspicion; trusting, unsuspecting.

Adjective

  1. Without mistrust or suspicion; trusting, unsuspecting.
    • [T]he Geeſe ſeeing this counterfet Gooſe [the ounce), approach nigh to viſit him, vvho with a ſuddaine jerke apprehends his miſtruſtleſſe prey. - 1634, William Wood, “Of the Beasts that Live on the Land”, in New...
    • The ſwain miſtruſtleſs of his ſmutted face, / While ſecret laughter tittered round the place […] - 1770, [Oliver] Goldsmith, The Deserted Village, a Poem, London: […] W[illiam] Griffin, […], →OCLC:

Origin

From mistrust + -less.