| In myth, killer of his own mother, Clytemnestra | 47 |
| In myth, home of the Cyclops | 28 |
| In myth, her tears created the morning dew | 42 |
| In myth she was turned into a spring | 36 |
| In myth she was changed into a nightingale | 42 |
| In myth he flew too close to the sun | 36 |
| In my direction | 15 |
| In music, slow and dignified | 28 |
| In music, it can be heavy | 25 |
| In music, a full interval higher or lower than written | 54 |
| In music softly | 16 |
| In multiple style | 17 |
| In mules, say | 13 |
| In mules | 8 |
| In mourning | 11 |
| In motion | 9 |
| In mothballs | 12 |
| In most instances | 17 |
| In most cases | 13 |
| In Morpheus's arms | 22 |
| In Morpheus' arms | 21 |
| In more than two ways | 21 |
| In more pain | 12 |
| In Montreal, "STOP!" | 30 |
| In modern-day slang, last night out with the guys just before the first baby arrives | 84 |
| In modern-day slang, guilt and lack of motivation after becoming rich | 69 |
| In modern lingo, an urban male who devotes much time to his appearance and lifestyle | 84 |
| In modern lingo, a vegetarian who occasionally eats meat | 56 |
| In mint condition | 17 |
| In midvoyage, maybe | 19 |
| In midvoyage | 12 |
| In midocean | 11 |
| In Mideast attire | 17 |
| In mid-spring of 2005 | 21 |
| In mid-Atlantic | 15 |
| In Mexico, you take it lying down | 33 |
| In metaphysics, the external world | 34 |
| In Mesopotamian mythology, he and Enkidu killed the Bull of Heaven | 66 |
| In memoriam phrase | 18 |
| In melodious tones | 18 |
| In medias___ | 12 |
| In medias _____ | 15 |
| In medias ___ | 13 |
| In medias __ | 12 |
| In medias -- | 12 |
| In may be casual in some places | 31 |
| In math, the sum of a number of terms | 37 |
| In many places, to a florist? | 29 |
| In many places | 14 |
| In many instances | 17 |
| In many cases, to a poet | 24 |
| In many cases | 13 |
| In many an English manor's garden | 37 |
| In Manhattan, Bronxward | 23 |
| In Manhattan's residential section | 38 |
| In lower rank | 13 |
| In low spirits | 14 |
| In love, in a Shakira lyric | 27 |
| In love with oneself | 20 |
| In love with money? | 19 |
| In love with | 12 |
| In love old style | 18 |
| In love | 7 |
| In losing a race she won a husband | 35 |
| In London, rich dude | 20 |
| In loco --- | 11 |
| In lockstep | 11 |
| In literature, the personification of purity | 44 |
| In literature, a peaceful place | 31 |
| In line with the goal | 21 |
| In line with moral values | 25 |
| In line with | 12 |
| In line to receive | 18 |
| In line (for) | 13 |
| In line | 7 |
| In limp or awkward fashion | 26 |
| In limited supply | 17 |
| In limbo | 8 |
| In like ___ | 11 |
| In lifeless fashion | 19 |
| In lieu of | 10 |
| In liberal amounts | 18 |
| In legend, he sold his soul to the devil | 40 |
| In legend, he fiddled in a fire | 31 |
| In legend he sold his soul to the devil | 39 |
| In left field | 13 |
| In league with | 14 |
| In leaf | 7 |
| In layers, as stadium seating | 29 |
| In layers | 9 |
| In last place | 13 |
| In last mo. | 11 |
| In large supply | 15 |
| In large quantity | 17 |
| In large quantities | 19 |
| In large amounts | 16 |
| In la-la land (Var.) | 20 |
| In la-la land | 13 |
| In knowing style | 16 |
| In knots | 8 |