The Collaborative International Dictionary of English v.0.48:
Chagrin \Cha*grin"\, v. t. [imp. & p. p. Chagrined; p. pr. & vb. n. Chargrining.] [Cf. F. chagriner See Chagrin, n.] To excite ill-humor in; to vex; to mortify; as, he was not a little chagrined. [1913 Webster]