whether
1 of 1conjunction/ˈwɛðər/
1
used to talk about a doubt or choice when facing two options
A2- He's trying to figure out whether he should study abroad or stay in his home country.
- I can't decide whether to wear a dress or jeans to the event.
- I'm not sure whether I should go to the party or stay home.
- Jane asked her friend whether he wanted to join her for lunch or eat separately.
- She asked whether he liked ice cream or cake better.
2
used to show an inquiry; if
3
in any case