(childish) That is not fair; a protest against unjust behaviour

(childish) Unfair.

(education, attributive) A type of grading system where a student either passes or fails a class, and no specific grade (such as A, B or C) is given.

(idiomatic) boring or pedantic

(Singapore, Malaysia, colloquial) To fail to understand something; be unable to comprehend what others are saying.

not enjoyable; not exciting; not fun / being a wet blanket

A vote of no confidence.

(archaic, formal) Under no circumstances whatsoever; not at all.

To not know at all. / To be mistaken; to not have a correct idea.

plural of no-confidence vote