whether
1 ENTRIES FOUND:
Britannica Dictionary definition of WHETHER
1
a
:
if it is or was true that
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Did you ask whether [=if] they were going?
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I don't know whether they were invited.
b
:
if it is or was better
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She was uncertain whether to go or stay.
2
— used to indicate choices or possibilities
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Whether we succeed or fail, we must try.
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It doesn't matter whether you pay by cash or check.
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We're going whether or not you decide to come along. = Whether or not you decide to come along, we're going. [=we're going if you decide to come with us and we're going if you decide not to come with us]
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I had to decide whether or not to respond to his letter.
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The police are investigating whether (or not) the death was a homicide.
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The game will be played whether it rains or not.
