If synonyms

33 synonyms for if such as doubt, allowing (that), condition, and constraint. If is a conjunction, and its antonyms are unless, certainly, and definitely.

Another word for if

1. as long as

Allowing (that), allowing that, as long as, assuming (that), contingent on, given that, if and only if, in the event that, on condition that, on the assumption that, presuming (that), provided (that), providing (that), supposing (that), and with/on the understanding that.

2. uncertainty

Condition, constraint, doubt, hesitation, lack of certainty, modification, precondition, prerequisite, provision, proviso, requirement, restriction, specification, stipulation, supposition, uncertainty, and vagueness.

Similar to if