1 a (often foll. by at, with) lacking patience or tolerance. b (of an action) showing a lack of patience.
2 (often foll. by for, or to + infin.) restlessly eager.
3 (foll. by of) intolerant.
Derivatives:
impatience n. impatiently adv.
Etymology: ME f. OF f. L impatiens (as IN-(1), PATIENT)
Useful english dictionary. 2012.