whether

Used in indirect questions to introduce one alternative.

Used to introduce alternative possibilities.

Either.

Which.

(whether or no) Regardless of circumstances.

See no.

A. interrog. Which (of two)? which one?

B. rel. (always in compound relative use, or with the antecedent implied, not expressed). Which (of two, or, less exactly, of more than two).

A. interrog. Which (of two. or of the two)? which one (of two)?

B. rel. Which (of two); which one (of two); also, more indefinitely, whichever.