苛々 いらいら
iraira

Noun
Suru Verb
To-Adverb

1. to get irritated; to get annoyed; to be on the edge; to fret; to lose patience

Onomatopoeia
Usually Written in Kana
ビルは試験 しけんのことでいらいらしている。
biruwa shikenno kotode iraira shite iru.
Bill is nervous about the exam.
Other forms: