if conj
1 in case that, or on condition that
if you try hard it might work
2 used to introduce an indirect question. In this sense, if approaches the meaning of whether
3 even though
an attractive if awkward girl
a used to introduce expressions of desire, with only
if I had only known
b used to introduce exclamations of surprise, dismay, etc.
if this doesn't top everything!
5 ♦
as if as it would be if; as though
he treats me as if I were junior to him
n
6 an uncertainty or doubt
the big if is whether our plan will work at all
7 a condition or stipulation I won't have any ifs or buts (Old English gif; related to Old Saxon ef if, Old High German iba whether, if)
IF , i.f. (Electronics) abbrev. for intermediate frequency