whether
//ˈwɛðər//
Conjunction
1
Used to introduce the first of two or more alternatives in an indirect question or conditional clause.
I don't know whether she will come to the party.
2
Used to introduce a single indirect question, expressing doubt or choice between alternatives.
I don't know whether she will come to the party.
3
Used to express that something is true regardless of which alternative is the case.
I'm going to the party whether you come or not.