impatient

英 [ɪm'peɪʃ(ə)nt] 美[ɪm'peʃnt]

1. restless or short of temper under delay or opposition;: "impatient with the slower students"; "impatient of criticism"

2. (usually followed by `to') full of eagerness;: "impatient to begin"; "raring to go"