否

to negate / to deny / not

clogged / evil

no; not so / (bound form) not; un-

mouth / classifier for things with mouths (people, domestic animals, cannons, wells etc) / classifier for bites or mouthfuls

otherwise; if not; or (else)

if not / otherwise / else / or else

whether or not (at the end of a phrase)

to negate / to deny / to reject / negative (answer) / negation

to veto / to overrule

is it possible or not?

veto power

decline to comment / not express an opinion / be noncommittal / hedge

veto

can or cannot / is it possible?

inefficient

negative sentence

can or cannot; is it possible?