also: まちどうしい
i-adjective
longed-for; anxiously awaited; can't wait for
Expresses the feeling of eagerly looking forward to something in the future; often used when the wait feels long.
夏休みが待ち遠しい。
I can't wait for summer vacation.
彼女に会える日が待ち遠しくて仕方ない。
I'm so impatient for the day I can see her.