US /ʌp tə ðə ˈmɑrk/
・UK /ʌp tə ðə ˈmɑ:k/
permission, but you think that this idea is not up to the mark and you are sad , you don't
but you think that this idea is not up to the mark and you're sad, you don't wanna be rude by saying a stern no, you're sad.