godan verb (-mu), transitive verb
tire of waiting; get tired of waiting
Expresses the feeling of becoming weary or fed up because someone or something is late or not arriving.
友達がなかなか来なくて、待ちあぐんでしまった。
My friend didn't come for ages, and I got tired of waiting.
彼女はバスを待ちあぐんで、タクシーを呼んだ。
She got tired of waiting for the bus and called a taxi.