Definition of mismay in English:

mismay

(also mismae)

Pronunciation /mɪsˈmeɪ/

verb

Scottish, Irish
  • with object To trouble, disturb; to perturb. Chiefly refl.

Origin

Late Middle English; earliest use found in Cursor Mundi: a Northumbrian poem of the 14th century. Probably alteration of dismay, after mis-.