if2 [countable] informal
1 British English, ifs, ands, or buts American English
if you do not want any ifs and buts, you want someone to do something quickly without arguing:
No ifs and buts - just make sure the job is done by tomorrow!
used to say that something is not likely to happen:
The team will go racing next year if - and it's a very big if - they can raise six million pounds.
something that may or may not happen:
There are too many ifs in this plan of yours.