Usage patterns
〈事〉に否を唱えるto raise an objection to something
He raised an objection to that decision.
否、〈事〉no, rather ... (used to correct or strengthen a preceding statement)
He succeeded—no, he achieved even more than success.
Expressions
や否やas soon as; the minute (that); no sooner than · whether or not 否やas soon as; no sooner than; one way or another · objection 否めないcannot deny; undeniable; incontrovertible