a1450 (1969) l. 631 Serue hym at honde Bothe nyth and day. Voluptas. Trostyly, Lord, redy.
1528 R. Copland tr. sig. H.ii Fynde one yt wyll trustely bere thy lettres, & brynge the an answere of them.
1583 A. Golding tr. J. Calvin Pref. 7 All such as behaue not themselues trustilie towards their neighbours.
1639 tr. J. A. Comenius (new ed.) lvi. §607 [Trustees] who, if they deale trustily.., make inventories.
1674 Indenture 16 Sept. in H. W. Richardson (1887) II. f. 159 Hee shall..truely & trustily obserue his sd Maisters lawfull Commands.
1707 29 All Subsidies will be most affectionately given, trustily husbanded, diligently and discreetly apply'd.
1799 W. Tooke III. x. ii. 130 The able practitioners rescue themselves by swimming; others fasten themselves by cords to their dogs, by whom they are trustily drawn to land.
1823 W. Scott II. ii. 34 He would have borne a letter trustily enough.
1861 W. M. Thackeray Roundabout Papers xi, in Mar. 510 Ah, how frankly, how trustily, how bravely he lied, poor John!
1964 19 May 3/7 He was trustily partnered by Wight, who also swept a six.
1996 J. M. Bennett vii. 132 William Harrison had no doubt..that men brewed trustily and that women sold duplicitously.