if: Meaning and Definition of

if

Pronunciation: (if), [key]
— conj.
  1. in case that; granting or supposing that; on condition that: Sing if you want to. Stay indoors if it rains. I'll go if you do.
  2. even though: an enthusiastic if small audience.
  3. whether: He asked if I knew Spanish.
  4. (used to introduce an exclamatory phrase): If only Dad could see me now!
  5. when or whenever: If it was raining, we had to play inside.
—n.
  1. a supposition; uncertain possibility: The future is full of ifs.
  2. a condition, requirement, or stipulation: There are too many ifs in his agreement.
  3. reservations, restrictions, or excuses: I want that job finished today, and no ifs, ands, or buts.

if

Pronunciation: [key]
— Radio. Radio.
  1. See
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.