if
Pronunciation:
/ɪf/noun
Definitions
An uncertainty, possibility, condition, doubt etc.
conjunction
Definitions
Supposing that, assuming that, in the circumstances that; used to introduce a condition or choice.
Example: If it rains, I shall get wet.
In the event that a statement is true (a programming statement that acts in a similar manner).
Example: If A, then B, else C.
Supposing that; used with past or past perfect subjunctive indicating that the condition is closed.
Example: I would be unhappy if you had not talked with me yesterday.
Supposing that; given that; supposing it is the case that.
Example: If that's true, we had better get moving!