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.
an enthusiastic if small audience.
He asked if I knew Spanish.
(used to introduce an exclamatory phrase):
If only Dad could see me now!
when or whenever:
If it was raining, we had to play inside.
a supposition; uncertain possibility:
The future is full of ifs.
a condition, requirement, or stipulation:
There are too many ifs in his agreement.
ifs, ands, or buts, reservations, restrictions, or excuses:
I want that job finished today, and no ifs, ands, or buts.
in case that, or on condition that: if you try hard it might work, if he were poor, would you marry him?
used to introduce an indirect question. In this sense, if approaches the meaning of whether
even though: an attractive if awkward girl
as if, as it would be if; as though: he treats me as if I were junior to him
an uncertainty or doubt: the big if is whether our plan will work at all
a condition or stipulation: I won’t have any ifs or buts
See interactive fiction
Old English gif (initial g- in Old English pronounced with a sound close to Modern English -y-), from Proto-Germanic *ja-ba (cf. Old Saxon, Old Norse ef, Old Frisian gef, Old High German ibu, German ob, Dutch of “if, whether”), from PIE pronomial stem *i- [Watkins]; Klein, OED suggest probably originally from an oblique case of a noun meaning “doubt” (cf. Old High German iba “condition, stipulation, doubt,” Old Norse if “doubt, hesitation,” Swedish jäf “exception, challenge”). As a noun from 1510s.
language A graph language used as an intermediate language for dataflow hardware. Used by the OSC SISAL compiler. [“The Manchester Prototype Dataflow Computer”, J.R. Gurd et al, CACM 28(1):34-52, Jan 1985]. (1996-01-05)
language S graph language used by the OSC SISAL compiler, a superset of IF1. [“IF2: An Applicative Language Intermediate Form with Explicit Memory Management”, M. L. Welcome et al, UC-LLNL, Nov 1986]. (1996-01-05)
Medicine/Medical. 1. . abbreviation 1. independent financial adviser International Federation on Aging
International Federation of Automatic Control, involved in informatics related to control systems.
abbreviation 1. International Fund for Agricultural Development International Fund for Agricultural Development