whether or not

whether or not

either if something is the case or if something is not the case; one way or the other. I'll drive to New York tomorrow whether or not it rains. I'm going to the mall whether you come with me or not.
See also: not

whether or not

Also, whether or no. Regardless of whether, no matter if. For example, Whether or not it rains, we're going to walk to the theater, or She plans to sing at the wedding, whether or no anyone asks her to. The negative element in these constructions may also follow the subject and verb, as in I have to attend, whether I want to or not. [c. 1600]
See also: not
References in classic literature ?
She had the matter under advisement, but a doubt as to whether or not she would sell or rent her hayfields kept her from coming to a conclusion.
I was thinking, sir, that very few masters would trouble themselves to inquire whether or not their paid subordinates were piqued and hurt by their orders.
Having settled that I must go to the Blue Boar, my mind was much disturbed by indecision whether or not to take the Avenger.
Now when Umslopogaas had recovered, I asked him what he would do, and whether or not I should pursue my plots to make him king of the land.
One short afternoon is enough for any two book-lovers, though they may have met for the first time in the morning, to make up their minds whether or not they have been born for each other.
And it was still an unsolved problem whether or not the United States could be kept united, whether or not it could be built into an organic nation without losing the spirit of self-help and democracy.
Benedict following our road, nor do we know whether or not there are any captive princesses coming in this coach.
The question, therefore, whether this amount of power shall be granted or not, resolves itself into another question, whether or not a government commensurate to the exigencies of the Union shall be established; or, in other words, whether the Union itself shall be preserved.
I could not even satisfy myself whether or not she breathed.
One can also see of two cautious men the one attain his end, the other fail; and similarly, two men by different observances are equally successful, the one being cautious, the other impetuous; all this arises from nothing else than whether or not they conform in their methods to the spirit of the times.
Whether or not my refusal seemed to the company ridiculous I cannot say, but at all events my companions played the whole evening, and were playing when I left.
For if he does not know at all that to which it is related, he will not know whether or not it is relative.
In the darkness Cannon could not perceive whether or not the enemy maintained his station; but his fears pictured him rigorously mounting guard.
He would not say whether or not she had attached herself to the sound Low Church School of his father; but she would probably be open to conviction on that point; she was a regular church-goer of simple faith; honest-hearted, receptive, intelligent, graceful to a degree, chaste as a vestal, and, in personal appearance, exceptionally beautiful.
In this address I said that the whole future of the Negro rested largely upon the question as to whether or not he should make himself, through his skill, intelligence, and character, of such undeniable value to the community in which he lived that the community could not dispense with his presence.