If vs. Whether

Ifconjunction

Supposing that, assuming that, in the circumstances that; used to introduce a condition or choice.

Ifconjunction

(computing) In the event that a statement is true (a programming statement that acts in a similar manner).

Ifconjunction

Supposing that; used with past or past perfect subjunctive indicating that the condition is closed.

Ifconjunction

Supposing that; given that; supposing it is the case that.

Ifconjunction

Although; used to introduce a concession.

Ifconjunction

Whether; used to introduce a noun clause, an indirect question, that functions as the direct object of certain verbs.

Ifconjunction

(usually hyperbolic) Even if; even in the circumstances that.

Ifconjunction

Introducing a relevance conditional.

Ifnoun

(informal) An uncertainty, possibility, condition, doubt etc.

Ifconjunction

In case that; granting, allowing, or supposing that; - introducing a condition or supposition.

Ifconjunction

Whether; - in dependent questions.

Whetherdeterminer

(obsolete) Which of two.

Whetherpronoun

(obsolete) Which of two.

Whetherconjunction

(obsolete) Introducing a direct interrogative question (often with correlative or) which indicates doubt between alternatives.

Whetherconjunction

Used to introduce an indirect interrogative question that consists of multiple alternative possibilities (usually with correlative or).

Whetherconjunction

Without a correlative, used to introduce a simple indirect question.

Whetherconjunction

Used to introduce a disjunctive adverbial clause which qualifies the main clause of the sentence (with correlative or).

Whetherpronoun

Which (of two); which one (of two); - used interrogatively and relatively.

Whetherconjunction

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.