B1conjunction1K

Whether

UK /["/ˈweðə(r)/"]/US /["/ˈweðər/"]/

Definition

used to express a doubt or choice between two possibilities

In simple words: If something is true or not.

Examples

  • He seemed undecided **whether** to go **or** stay.
  • It remains to be seen **whether or not** this idea can be put into practice.
  • I asked him **whether** he had done it all himself **or whether** someone had helped him.
  • I'll see whether she's at home *(= or not at home)*.
  • It's doubtful whether there'll be any seats left.
  • You are entitled to a free gift whether you accept our offer of insurance or not.
  • I'm going **whether** you like it **or not**.
  • **Whether or not** we're successful, we can be sure that we did our best.

Usage notes

Use 'whether' to introduce options or alternatives, especially when discussing choices. It's appropriate in both spoken and written English, but can be formal in certain contexts. Avoid using it when only one option exists.

Grammar pattern

whether + clause

Memory hint

Think of 'whether' like a weather vane showing two directions — it points to choices.

Collocations

  • whether or not
  • decide whether
  • whether to choose

Synonyms

  • if
  • alternatively
  • either

Antonyms

  • if not
  • unless

Common mistakes

  • Confusing 'whether' with 'if' in certain contexts.
  • Using 'whether' without a second alternative.
  • Omitting 'if' when it should be used instead of 'whether'.