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The Collaborative International Dictionary
Insinewed

Insinew \In*sin"ew\, v. t. [imp. & p. p. Insinewed; p. pr. & vb. n. Insinewing.] To strengthen, as with sinews; to invigorate. [Obs.]

All members of our cause, . . . That are insinewed to this action.
--Shak.

Wiktionary
insinewed

a. (context obsolete English) strengthened, as if with sinews; invigorated