completion; conclusion
《grammar》perfect (tense)
「完了」 has another reading with different meanings.
end; completion
作業の完了を報告させていただきます。
I would like to report the completion of the work.
予定通りに完了できた。
It was completed on schedule.
完了したらすぐ連絡してくださいね。
Please contact me as soon as it's done.