whether

Conj

Indicates doubt between possibilities (usually with correlative or).
Without a correlative, introduces a simple indirect question.
Introduces a disjunctive adverbial clause qualifying the main clause (with correlative or).
Introduces a direct question between alternatives (often with correlative or).

Det

Which of two.

Pron

Which of two.

Conjunction

Expressing a doubt or choice between alternatives.

Examples

Do you know whether he's coming?
He chose the correct answer, but whether by luck or by skill I don't know.
He's coming, whether you like it or not.
I can't decide whether to get divorced now or wait.
I'll enjoy playing with my friends again, whether we win or lose.
The dilemma was whether to play for points or to block his opponent’s Scrabble options.
Whether or not you're successful, you can be sure you did your best.
Whether we'll be on time I'm unsure.

Origin / Etymology

From Middle English whether, whather, from Old English hweþer, hwæþer, from Proto-West Germanic *hwaþar, from Proto-Germanic *hwaþeraz, comparative form of *hwaz (“who”). Cognate with German weder (“neither”), Swedish var, Icelandic hvor (“each of two, which of two”).

Scrabble Score: 16

whether: valid Scrabble (US) TWL Word
whether: valid Scrabble Word in Merriam-Webster MW Dictionary
whether: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 14

whether: valid Words With Friends Word