Synonyms for if

Most common

whether

All synonyms

Conjunction

Antonyms

unless

All antonyms of if →

Definitions

1. conj. 1

   Supposing that, assuming that, in the circumstances that; suppositive used to introduce a condition that may be (or prove to be) either true or false.

   I'll do it next week if I have time.

Related words

Phrases

as if if you will what if if anything nothing if not big if true even if huge if true

Example sentences

• whether The question is whether Mike knew the fact or not.

Popularity over time

Use in printed books, per decade from 1850 to 2019.

By length

7 letters

whether²

8 letters

provided³

The small number after each word is its number of syllables (whether² = 2 syllables).