1
general::
Phrase(s): (That causes) no problem.
That will not cause a problem for me or anyone else. (No problem is informal.) • Mary: Do you mind waiting for just a little while? Bob: No problem. • Sue: Does this block your light? Can you still read? Jane: That causes no problem., Phrase(s): no problem
Go to no sweat.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
1. Also, no sweat;not to worry. There's no difficulty about this, don't concern yourself. For example, Of course I can change your tire? no problem, or You want more small change? no sweat, or We'll be there in plenty of time, not to worry. The first of these colloquial terms dates from about 1960 and the second from about 1950. The third, originating in Britain in the 1930s and using not to with the sense of "don't," crossed the Atlantic in the 1970s. 2. You're welcome, as in Thanks for the ride, Dad.? No problem. [Late 1900s]
American Heritage Idioms