| Text | Length |
| Octagon or oval | 15 |
| Octagon inscription | 19 |
| Octagon features | 16 |
| Octad plus one | 14 |
| Octad in a gallon | 17 |
| Octad | 5 |
| Octa- plus two | 14 |
| Octa- plus one | 14 |
| Octa- minus one | 15 |
| Octa- halved | 12 |
| Octa- divided by two | 20 |
| Octa- + two | 11 |
| Octa preceder | 13 |
| Oct., Nov., etc. | 16 |
| Oct.'s stone | 16 |
| Oct.'s gem | 14 |
| Oct.'s birthstone | 21 |
| Oct. stone | 10 |
| Oct. start of a new Supreme Court session | 41 |
| Oct. predecessor | 16 |
| Oct. precursor | 14 |
| Oct. preceder | 13 |
| Oct. ordeal for many teens | 26 |
| Oct. ordeal for juniors | 23 |
| Oct. ordeal for jrs. | 20 |
| Oct. lapel ornaments | 20 |
| Oct. follower | 13 |
| Oct. contest whose winner goes to the World Series | 50 |
| Oct. chaser | 11 |
| Oct. casualty | 13 |
| Oct. birthstone | 15 |
| Oct. and Dec. | 13 |
| Oct. 31, Nov. 30, etc. | 22 |
| Oct. 31 wear | 12 |
| Oct. 31 walker | 14 |
| Oct. 31 transport | 17 |
| Oct. 31 tradition | 17 |
| Oct. 31 sound effects | 21 |
| Oct. 31 social event | 20 |
| Oct. 31 needs | 13 |
| Oct. 31 greeting | 16 |
| Oct. 31 goal | 12 |
| Oct. 31 giveaway | 16 |
| Oct. 31 choice | 14 |
| Oct. 31 canal? | 14 |
| Oct. 31 alternative | 19 |
| Oct. 24th honoree | 17 |
| Oct. 24, every year | 19 |
| Oct. 24, 1947 declaration | 25 |
| Oct. 24 | 7 |
| Oct. 2003 retiree | 17 |
| Oct. 1975 TV debut | 18 |
| Oct. 1975 NBC debut | 19 |
| Oct. 15, in old Rome | 20 |
| Oct. 15, e.g. | 13 |
| Oct. 15 celebrations | 20 |
| Oct. 12, 1492, e.g. | 19 |
| Oct. 12 1492 e.g. | 19 |
| Oct- minus one | 14 |
| OCS grads, usually | 18 |
| OCS grads | 9 |
| Ocotillos | 9 |
| Ocotillo's milieu | 21 |
| Ocotes, sapins, etc. | 20 |
| Ocote or persea | 15 |
| Ochs, in "Der Rosenkavalier" | 38 |
| Ochs or Silvers | 15 |
| Ochs of opera | 13 |
| Ochs of "Der Rosenkavalier" | 37 |
| Ochs and Collins | 16 |
| Ochre _____ , Manitoba | 22 |
| Ochre and others | 16 |
| Ocho_____, Jamaica | 18 |
| Ochocinco's org. | 20 |
| Ochocinco of the NFL | 20 |
| Ochoa's org. | 16 |
| Ochoa who won the 2007 Women's British Open | 47 |
| Ochoa who was the first #1-ranked golfer from Mexico | 52 |
| Ochoa of women's golf | 25 |
| Ochoa of the LPGA | 17 |
| Ocho _____, Jamaica | 19 |
| Ocho ___, Jamaician resort | 26 |
| Ocho ___, Jamaican resort | 25 |
| Ocho ___, Jamaican port | 23 |
| Ocho ___, Jamaica | 17 |
| Ocho ___ (Jamaican resort) | 26 |
| Ocho __, Jamaica | 16 |
| Ocho preceder | 13 |
| Ocho minus uno | 14 |
| Ocho minus siete | 16 |
| Ocho minus cinco | 16 |
| Ocho menos dos | 14 |
| Ocho less tres | 14 |
| Ocho --, Jamaica | 16 |
| Ocho - dos | 10 |
| Ocho + tres | 11 |
| Ochlophobist's dread | 24 |
| Ochlophobics fear them | 22 |
| Ochlocratic rulers | 18 |
| Ochlocracy's ruling crowd | 29 |
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