Source : Webster's Revised Unabridged Dictionary (1913)

Endamage \En*dam"age\ (?; 48), v. t. [imp. & p. p. {Endamaged}
   (?; 48); 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.