Japanese phrase
___は無理です。 ___ wa mu ri de su
Meaning
I can't ___.
When to use it
States that the speaker cannot do something. It is a common, polite way to refuse a request or explain that a plan is not possible.
Example dialogue
今日は来られますか？ kyō wa ko ra re ma su ka
Can you come today?
今日は無理です。 kyō wa mu ri de su
I can't make it today.