feat (n.) 2
action, deed, conduct
H8 I.i.61 [Norfolk to Buckingham, of Wolsey] nor called upon / For high feats done to th'crown
TNK III.i.45 [Palamon to Arcite] give me language such / As thou hast showed me feat [i.e. suit your words to your actions]
TNK V.i.43 [Arcite to his knights] force and great feat / Must put my garland on me