すませて

finishing, having finished

→ 済ませる
すませ finish, get done with + て Te-form (conjunctive form)
verb · informal Rare #34,876
finishing, having finished Often used before から to mean “after finishing.”
JA: 宿題をすませてから、映画を見ます。
EN: After finishing my homework, I’ll watch a movie.
Conjugation of 済ませる
済ませてすませて
Present

彼らはお昼をすませてから出かけた。

They went out after having lunch.

宿題をすませてしまったら行くよ。

I’ll go once I’ve finished my homework.

仕事をすませて、彼は床についた。

Having finished his work, he went to bed.

私は宿題をすませてからテレビを見た。

I watched TV after finishing my homework.