| It's overexacting | 21 |
| It's over your head | 23 |
| It's over when cut? | 23 |
| It's over thirty quadrillion seconds long | 45 |
| It's over the North Pole | 28 |
| It's over the attic | 23 |
| It's over Jordan, on a map | 30 |
| It's over in Ulm | 20 |
| It's over in Oct. | 21 |
| It's over in Germany | 24 |
| It's over in Berlin | 23 |
| It's over from Dover | 24 |
| It's over for Hans | 22 |
| It's over due | 17 |
| It's over a foot | 20 |
| It's over 4,000 miles long | 30 |
| It's over 32 miles per hour | 31 |
| It's outta here! | 20 |
| It's outstanding | 20 |
| It's outside of your house | 30 |
| It's outlawed | 17 |
| It's outdated | 17 |
| It's out on a lime? | 23 |
| It's out on a lime | 22 |
| It's out on a limb | 22 |
| It's out of your mind | 25 |
| It's out of this world! | 27 |
| It's out of this world | 26 |
| It's out of the mouths of babes | 35 |
| It's out of the bag | 23 |
| It's out of reach | 21 |
| It's out of order | 21 |
| It's out of one's mind | 30 |
| It's out of focus | 21 |
| It's out of bounds | 22 |
| It's out in the Outback | 27 |
| It's out for welcome guests | 31 |
| It's out for a pout | 23 |
| It's otherwise known as "Return of the Jedi" | 58 |
| It's orgasmic | 17 |
| It's organized in a family | 30 |
| It's ordered in pints | 25 |
| It's opposite WNW | 21 |
| It's opposite the point | 27 |
| It's opposite the hypotenuse | 32 |
| It's opposite the head | 26 |
| It's opposite the face | 26 |
| It's opposite the eye | 25 |
| It's opposite SSW | 21 |
| It's opposite NNW | 21 |
| It's opposite julio on a calendario | 39 |
| It's opposite Juárez | 27 |
| It's opposite D in the circle of fifths | 43 |
| It's opposite Calais | 24 |
| It's opposed by Thanatos, in Freudian theory | 48 |
| It's operated by foot | 25 |
| It's opened without a letter opener | 39 |
| It's opened with a knife | 28 |
| It's opened with a key | 26 |
| It's opened in saunas | 25 |
| It's opened for a fill-up | 29 |
| It's opened at the pump | 27 |
| It's opened and shut | 24 |
| It's open to interpretation (Var.) | 38 |
| It's open to interpretation | 31 |
| It's open to debate | 23 |
| It's open to attack | 23 |
| It's open for discussion (Var.) | 35 |
| It's open for discussion | 28 |
| It's open for dinner | 24 |
| It's open and shut | 22 |
| It's Only ____ Moon | 23 |
| It's only useful when struck | 32 |
| It's only skin-deep | 23 |
| It's only one until you cross it? | 37 |
| It's only one until you cross it | 36 |
| It's only make-believe | 26 |
| It's only fair? | 19 |
| It's only effective when lifted | 35 |
| It's only effective if dropped | 34 |
| It's one-third of six? | 26 |
| It's one-dimensional | 24 |
| It's one's word against the other | 41 |
| It's one until you cross it? | 32 |
| It's one thing after another? | 33 |
| It's one thing after another | 32 |
| It's one step up from giga- | 31 |
| It's one step from the bigs | 31 |
| It's one step behind vice? | 30 |
| It's one millionth of peta- | 31 |
| It's one funny thing after another | 38 |
| It's one for the books | 26 |
| It's on your good side | 26 |
| It's on your car | 20 |
| It's on your business card | 30 |
| It's on Washington's quarter | 36 |
| It's on Victoria Land's coast | 37 |
| It's on track | 17 |
| It's on top of piles | 24 |
| It's on the wing | 20 |