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Pronunciation varies by accent · adjective
(obsolete) 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.
The ſwain miſtruſtleſs of his ſmutted face, / While ſecret laughter tittered round the place […]
Use mistrustless when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Mistrustless means (obsolete) Without mistrust or suspicion; trusting, unsuspecting..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
[T]he Geeſe ſeeing this counterfet Gooſe [the ounce), approach nigh to viſit him, vvho with a ſuddaine jerke apprehends his miſtruſtleſſe prey.
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