adv. Chiefly Sc. [f. prec. + -LY2.] In a theftuous manner; by or as by theft; stealthily, secretly.
c. 1400. Sc. Trojan War, II. 1637. Vlixes stall thiftuisly Away, as grauntand him gilty.
15678. Reg. Privy Council Scot., I. 609. The leid upoun the Cathedrall Kirkis is thiftuouslie stowin and takin away.
1653. Urquhart, Rabelais, II. xiv. One little villainous Turkie rogue came thiefteously to snatch away some of my lardons.
1880. Muirhead, Ulpian, vii. § 2. If a husband have theftuously abstracted anything of his wifes in prospect of divorce.
1882. Chamb. Jrnl., XIX. 73. On a late occasion, the tomb of a noble family was theftuously rifled of its contents.