| Igneous rock composed of feldspar and hornblende | 48 |
| Igneous rock beneath the earth's surface | 44 |
| Ignatz Mouse's brick-throwing target | 40 |
| Igloo? (or digging tool missing a piece) | 40 |
| Iggy Pop's backup group, with "The" | 49 |
| Iggy Pop band, before the Stooges | 33 |
| Iggy Pop "Eggs On ___" | 32 |
| Iggy Pop "Eat Or Be ___" | 34 |
| Iger's predecessor at Disney | 32 |
| Iffy thing to wear in a windstorm? | 34 |
| If-then-__: programmer's sequence | 37 |
| If-all-goes-wrong-the-first-time scheme | 39 |
| If's partner, in programming | 32 |
| If ____ Would Leave You : Camelot ballad | 42 |
| If ____ Have You : 1976 hit song | 34 |
| If ___ (should circumstances warrant) | 37 |
| If ___ (Kenneth Cole shoe brand) | 32 |
| If you're tired, you've lost it | 39 |
| If you're on it, you're going to hell | 45 |
| If you're in it, you're out of it | 41 |
| 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 play it, it could be grand | 33 |
| If you pass the bar, what will it mean? | 39 |
| 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 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 fire it, it makes a report | 33 |
| If you feel like you're holding ___ | 39 |
| If you drop it, you may see things | 34 |
| If you do it right, it all adds up | 34 |
| If two silkworms raced they'd end in ___ | 44 |
| If too big, it could lead to one's downfall | 47 |
| If things continue as they're going | 39 |
| If they roll they're not mossy | 34 |
| If they look like you they may be dead | 38 |
| If successful, they're laughed at | 37 |
| If said again, group in a 1950s African uprising | 48 |
| If quitting, your boss wants two ... | 36 |
| If one's broken, it's often good | 40 |
| 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 not today, then tomorrow . . . maybe | 39 |
| If it's tidy, it's not tiny | 35 |
| If it's repeated, it's nothing new | 42 |
| If it's outstanding, it's really not good | 49 |
| If it's German, it may be a dog | 35 |
| If it's canceled, it's accepted | 39 |
| If it's canceled, it has been accepted | 42 |
| If it's a bust, it still qualifies as this | 46 |
| If it's a bust, it still may qualify as this | 48 |
| If it follows also, it's a failure | 38 |
| If it blows its top, run through Italy | 38 |
| If it ain't this, don't fix it | 38 |
| If follower, in computer programs | 33 |
| If everything goes as badly as possible | 39 |
| If broken, some people are happy, some sad | 42 |
| If any deity were to have a great tan, ___ | 42 |
| If all goes exactly according to plan | 37 |
| If a = b and b = c, then a = c, e.g. | 36 |
| If A > B and B > C, then A > C, e.g. | 45 |
| If 50% survives the heat, then...? | 34 |
| Idyllic valley in the Kunlun Mountains | 38 |
| IDs passed down to Fido by bequest? | 35 |
| IDs often verified by the last 4 digits | 39 |
| IDs often used in identity theft | 32 |
| Idol's disappointing features | 33 |
| Idol whose fans are known as Claymates | 38 |
| Idol whose fans are called Claymates | 36 |
| Idol of the "Claymates" | 33 |
| Idol contestant who came in second to Studdard | 46 |
| Idol Clay currently in "Spamalot" | 43 |
| Idle who sang "The Lumberjack Song" | 45 |
| Idle repairman's employer, in ads | 37 |
| Idle one in the Monty Python crew? | 34 |
| Idle of "Spamalot" fame | 33 |
| Idle of "Monty Python" | 32 |
| Idle of "Life of Brian" | 33 |
| Idle of ''Spamalot'' | 36 |
| Iditarod racer's destination | 32 |
| Idiot who drove his car into two feet of mud? | 45 |
| Idiomatic sheep's clothing wearer | 37 |
| Idiom with "as" in the middle | 39 |
| Idiom for the noblest members of society | 40 |
| Idiom for no longer able to function | 36 |
| Idiom for an impracticable dream | 32 |
| Idiom for a neologist taking a siesta? | 38 |
| Idiom for a multitude of ongoing projects | 41 |