Webster’s Revised Unabridged Dictionary · 1913
Endamage
En·dam′age, v. t. [imp. & p. p. Endamaged; p. pr. & vb. n. Endamaging.] [Pref. en- + damage: cf. F. endommager.] To bring loss or damage to; to harm; to injure. [R.]
The trial hath endamaged thee no way. Milton.