1. IFS - Noun
2. IFS - Proper noun
Initialism of iterated function system.
Initialism of information fatigue syndrome.
IFS
(UK, economics) Initialism of Institute for Fiscal Studies: an economic research institute based in London, United Kingdom, which specialises in UK taxation and public policy.
I'm handsome, no ands, buts or ifs. Colin Mochrie
Courage is in the air in bracing whiffs Better than all the stalemate an's and ifs. Robert Frost
If ifs and buts were candy and nuts, it would be Christmas everyday. John Boehner
Ifs and buts could erode the soundest of principles. Robert Sheckley
If ifs and ands were pots and pans there'd be no work for tinkers. Latin Proverb
If the partridge had the woodcock's thing, it would be the best bird that ever fly. Speak without ifs and ands. Turkish Proverb