adv. (UN-1 11, 5 b.)

1

c. 1555.  Harpsfield, Divorce Hen. VIII. (Camden), 65. The adversaries, that … have so unfaithfully and unsincerely demeaned themselves.

2

1684.  Pennsylv. Arch., I. 91. As unsincerely all along as I have been dealt with.

3