a. [UN-1 7. Cf. OE. unsóþfæst.] Not truthful or true.

1

a. 1300.  Cursor M., 26874. Þof his scrift vnsothfast be, It sal him serue o thinges thre.

2

1570.  Levins, Manip., 36. Vnsoothfast, infidelis.

3