Definition of "mistrustful"

[…] I hold it cowardiceTo rest mistrustful where a noble heartHath pawn’d an open hand in sign of love;

c. 1591–1592 (date written), William Shakespeare, “The Third Part of Henry the Sixt, […]”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act IV, scene ii]

In the passage I met the nurse. She greeted me with a little smile; but I was mistrustful of professional cheerfulness that night.

1910, Ian Hay, The Right Stuff‎, Boston: Houghton Mifflin, Book Two, Chapter Sixteen, p. 284

He lookt askew with his mistrustfull eyes,And nycely trode, as thornes lay in his way

1590, Edmund Spenser, “Book III, Canto XII”, in The Faerie Queene. […], London: […] [John Wolfe] for William Ponsonbie, page 579

At last, having held a document before her glasses for nearly five minutes, she presented it across the counter; accompanying the act by another inquisitive and mistrustful glance—it was for J. E.

1847 October 16, Currer Bell [pseudonym; Charlotte Brontë], chapter X, in Jane Eyre. An Autobiography. […], volume I, London: Smith, Elder, and Co., […], page 160

He led the way to the stable-yard accordingly, the Rat following with a most mistrustful expression […]

1908 October, Kenneth Grahame, chapter 2, in The Wind in the Willows, New York, N.Y.: Charles Scribner’s Sons

The mender of roads was now coming to himself, and was mistrustful of having made a mistake in his late demonstrations; but no.

1859, Charles Dickens, “Book 2, Chapter 15”, in A Tale of Two Cities, London: Chapman and Hall, […]

Vp we gad, owt spredding oure sayls and make to the seaward:Al creeks mistrustful with Greekish countrye refusing.

1582, Richard Stanihurst, transl., Thee First Foure Bookes of Virgil his Aeneis‎, Leiden: John Pates, Book 3, p. 60

[…] stonish’d as night-wanderers often are,Their light blown out in some mistrustful wood,Even so confounded in the dark she lay,Having lost the fair discovery of her way.The spelling has been modernized.

1593, 1896