The Collaborative International Dictionary
Unsad
Unsad \Un*sad"\, a. [AS. uns[ae]d unsated, insatiable. See Un- not, and Sad.] Unsteady; fickle. [Obs.]
O, stormy people, unsad and ever untrue.
--Chaucer.
Wiktionary
unsad
a. (context obsolete English) unsteady; fickle