| Opening requirement, at times | 29 |
| Opening segment in a newscast | 29 |
| Opening segment, for short | 26 |
| Opening sound of an MGM film | 28 |
| Opening statement, for short | 28 |
| Opening trattoria course | 24 |
| Opening with dexterity | 22 |
| Opening word for Ali Baba | 25 |
| Opening word for Ali Baba? | 26 |
| Opening words at a ball game? | 29 |
| Opening words deliverer | 23 |
| Opening words on an agenda | 26 |
| Opening words, for short | 24 |
| Opening-night celebration | 25 |
| Opening-night stretches | 23 |
| Openings (anatomical) | 22 |
| Openings at the post office | 27 |
| Openings for horse trainers | 27 |
| Openings for some companions | 28 |
| Openings in football helmets | 28 |
| Openings on football helmets | 28 |
| Openings to be filled? | 22 |
| Openings to jump out of? | 24 |
| Openings where air enters | 25 |
| Openly admitted, as in court | 28 |
| Openly affectionate couple | 26 |
| Openly attack en masse | 22 |
| Openly displayed anger | 22 |
| Openly unpleasant remark | 24 |
| Openly won't tolerate | 25 |
| Openly, and not nocturnally | 27 |
| Opens a bottle of bubbly | 24 |
| Opens a slide fastener | 22 |
| Opens a tube of toothpaste | 26 |
| Opens an envelope, perhaps | 26 |
| Opens with a combination | 24 |
| Opens, as a change purse | 24 |
| Opens, as a pill bottle | 23 |
| Opens, as a ski jacket | 22 |
| Opens, as a sleeping bag | 24 |
| Opens, as a sugar packet | 24 |
| Opens, as a wine bottle | 23 |
| Opens, as an aspirin bottle | 27 |
| Opens, as some jackets | 22 |
| Opera ... wine ... boot | 23 |
| Opera about an opera singer | 27 |
| Opera and Chrome, for two | 25 |
| Opera based on a Greek legend | 29 |
| Opera based on Greek legend | 27 |
| Opera bit-role, in a way | 24 |
| Opera buff's subject | 24 |
| Opera by d'Erlanger | 23 |
| Opera by Horatio Parker | 23 |
| Opera by Karl Goldmark | 22 |
| Opera by Rossini or Verdi | 25 |
| Opera character with a dream | 28 |
| Opera company with muscle | 25 |
| Opera composer Nikolai | 22 |
| Opera conductor Alberto | 23 |
| Opera conductor Daniel | 22 |
| Opera conductor Daniel ___ | 26 |
| Opera director Capobianco | 25 |
| Opera extra's prop | 22 |
| Opera extras, for short | 23 |
| Opera featuring elephants | 25 |
| Opera first performed in 1762 | 29 |
| Opera for singer Cook? | 22 |
| Opera glasses on a handle | 25 |
| Opera great ___-Casazza | 23 |
| Opera hero's range, often | 29 |
| Opera heroine, usually | 22 |
| Opera house attire, perhaps | 27 |
| Opera house seating section | 27 |
| Opera impresario Caldwell | 25 |
| Opera interrupter of note | 25 |
| Opera lass who broke a vow | 26 |
| Opera of 1900 set in 1800 | 25 |
| Opera of a certain price | 24 |
| Opera or concert attachment | 27 |
| Opera or concert conclusion? | 28 |
| Opera premiere of 1835 | 22 |
| Opera premiere: Cairo, 1871 | 27 |
| Opera premiere: Milan, 1831 | 27 |
| Opera premiere: Paris, 1881 | 27 |
| Opera premiere: Rome, 1900 | 26 |
| Opera premiere: Venice, 1857 | 28 |
| Opera redone by Disney | 22 |
| Opera redone by Elton John | 26 |
| Opera set along the Nile | 24 |
| Opera set in 1800 Rome | 22 |
| Opera set in ancient Egypt | 26 |
| Opera set in ancient Thebes | 27 |
| Opera set in Rome in 1800 | 25 |
| Opera set near the Nile | 23 |
| Opera setting, for short | 24 |
| Opera singer Bostridge | 22 |
| Opera singer in an opera | 24 |
| Opera singer Roswaenge | 22 |
| Opera singer Simon ___ | 22 |
| Opera singer Tetrazzini | 23 |