Japanese phrase
できません。 de ki ma se n
Meaning
I can't.
When to use it
Expresses polite inability or refusal. It states that something cannot be done and can gently decline a request without giving a reason.
Example dialogue
明日、手伝えますか？ asu te tsuda e ma su ka
Can you help tomorrow?
すみません、できません。 su mi ma se n de ki ma se n
Sorry, I can't.