済

ONさい、せい

KUNすむ、すます

Meanings

finishcompletesettle (debt)relieve

How to remember

'Sai' — I SIGH in relief because the task is FINISHED.

'Sumu' — When you SUM up all the work, it's FINISHED.

済むすむ

to finish, to be completed

済ますすます

to finish, to get by, to conclude

経済けいざい

economy

返済へんさい

repayment

済ませるすませる

to finish, to get done (causative)