| Iffy no. | 8 |
| Iffy Const. amendment | 21 |
| Iffy attempt | 12 |
| Iffy | 4 |
| If-___ (computer routines) | 26 |
| If-__: conditional statements | 29 |
| If-then-__: programmer's sequence | 37 |
| If-then analysis | 16 |
| If-possible connector | 21 |
| If-looks-could-kill looks | 25 |
| If-all-goes-wrong-the-first-time scheme | 39 |
| If, and or but: Abbr. | 21 |
| If's partner, in programming | 32 |
| If's partner, in logic | 26 |
| If's frequent companion, in a computer program | 50 |
| If ____ Would Leave You : Camelot ballad | 42 |
| If ____ Have You : 1976 hit song | 34 |
| If ____ a Hammer | 16 |
| If ___ be | 9 |
| If ___ (when necessary) | 23 |
| If ___ (should circumstances warrant) | 37 |
| If ___ (Kenneth Cole shoe) | 26 |
| If ___ (Kenneth Cole shoe brand) | 32 |
| If ___ | 6 |
| If __ be | 8 |
| If you're tired, you've lost it | 39 |
| If you're on it, you're going to hell | 45 |
| If you're lucky | 19 |
| If you're in it, you're out of it | 41 |
| If you're in an awkward position, you're doing it right | 63 |
| If you're in a hurry, step on this | 38 |
| If you're human, you'll do it | 37 |
| If you're here, you'll take a dive | 42 |
| If you're fair, you might want a high one | 45 |
| If you're fair, it's hard to get one | 44 |
| If you're coherent, you can make it | 39 |
| If you use one, you're a sucker | 35 |
| If you take this, you'll be sick | 36 |
| If you stop wearing one, you may lose a point | 45 |
| If you sell high, buy this way | 30 |
| If you please | 13 |
| If you play it, take a bow | 26 |
| If you play it, it could be grand | 33 |
| If you pass the bar, what will it mean? | 39 |
| If you need a zombie's help, never say, "___" ... | 63 |
| If you make this, there can be no possible change | 49 |
| If you look this way, you'll miss the sunset | 48 |
| If you look good, you'll get them | 37 |
| If you look at it the right way | 31 |
| If you jump it you're in trouble | 37 |
| If you have this, you already knew this answer | 46 |
| If you have this, there may be leftovers | 40 |
| If you had it, you wouldn't need this clue | 46 |
| If you go out drinking with them, say "Cheers!" instead of "Bottoms up!" | 92 |
| If you go at it, you'll get there as quickly as possible | 60 |
| If you get this amount of votes, you're not a spoiler | 57 |
| If you fire it, it makes a report | 33 |
| If you fight it, it might win | 29 |
| If you feel like you're holding ___ | 39 |
| If you eat it, you will die | 27 |
| If you drop it, you may trip | 28 |
| If you drop it, you may see things | 34 |
| If you do it right, it all adds up | 34 |
| If you dig old things, dig this | 31 |
| If you break them, they run | 27 |
| If you add up the pros and cons | 31 |
| If we can do it, it's this | 30 |
| If two silkworms raced they'd end in ___ | 44 |
| If too big, it could lead to one's downfall | 47 |
| If This ____ Love | 17 |
| If this fits, wear it! | 22 |
| If things go well | 17 |
| If things continue as they're going | 39 |
| If they're dropping by your house, don't stick your head out the window | 79 |
| If they're boring, they're doing their job | 50 |
| If they roll they're not mossy | 34 |
| If they look like you they may be dead | 38 |
| If there should be | 18 |
| If there is a need | 18 |
| If that fails | 13 |
| If that doesn't work | 24 |
| If successful, they're laughed at | 37 |
| If spared, it spoils | 20 |
| If said again, group in a 1950s African uprising | 48 |
| If red, these may mislead | 25 |
| If quitting, your boss wants two ... | 36 |
| If or if not | 12 |
| If only | 7 |
| If one's broken, it's often good | 40 |
| If one's angry, it's up | 31 |
| If one were to ___, one would learn that their address is 605 5th St., Seattle, WA | 82 |
| If one were to ___, one would get articles about crazy online personal ads | 74 |
| If one were to ___, one would discover that they have 8 million articles in 253 languages | 89 |
| If one were to ___, one would see a bunch of social networking parody videos | 77 |
| If one is white, then it's little | 37 |
| If one is white, it's no big deal | 37 |
| If Ohio went the other way, ___ be president now | 48 |
| If often requires a bedroom set | 31 |
| If nothing goes wrong | 21 |
| If nothing else works | 21 |