了 total

as in, "We don't have the total number of parts, so we need to REORDER more."

To me it just looks like a broken coat hanger, which is totally useless.

finish ★★★☆☆ NP
完 (complete) + 了 (total) = 完了 (finish)

to finish work on a project - an annual report, a re-formatting of the database, etc.

OK, got it. ★★★☆☆
了 (total) + 解 (solve / untie) = 了解 (OK, got it.)

roger that! ('I got it!') (originally used by military, but now often used when you text, because of its brevity)!

expire ☆☆☆☆☆ NP
終 (end) + 了 (total) = 終了 (expire)

to expire, to come to an end (used about contracts or subscriptions expiring)