whether

Definition

• pron. Which (of two); which one (of two); -- used
• interrogatively and relatively.
• conj. In case; if; -- used to introduce the first or two or
• more alternative clauses, the other or others being connected by or, or
• by or whether. When the second of two alternatives is the simple
• negative of the first it is sometimes only indicated by the particle
• not or no after the correlative, and sometimes it is omitted entirely
• as being distinctly implied in the whether of the first.

Example sentences

1. conj.

   I don't know whether to go to the party or stay home.

2. pron.

   Do you want tea or coffee? I don't mind which one you choose.