adjective full of
trust; free of distrust, suspicion, or the like; confiding:
a trustful friend.
Related forms trust·ful·ly, adverb
trust·ful·ness, noun
o·ver·trust·ful, adjective
o·ver·trust·ful·ly, adverb
o·ver·trust·ful·ness, noun
un·trust·ful, adjective
un·trust·ful·ly, adverb