| Horizontal graph lines | 22 |
| Horizontal line | 15 |
| Horizontal line in a mathematical plane | 39 |
| Horizontal line on a graph | 26 |
| Horizontal lines | 16 |
| Horizontal lines on graphs | 26 |
| Horizontal lines, in algebra class | 34 |
| Horizontal mine entrance | 24 |
| Horizontal molding | 18 |
| Horizontal molding pieces | 25 |
| Horizontal part of H | 20 |
| Horizontal punctuator | 21 |
| Horizontal reference line on a graph | 36 |
| Horizontal restaurant surface | 29 |
| Horizontal spreadsheet units | 28 |
| Horizontal thread in a fabric | 29 |
| Horizontal timber | 17 |
| Horizontal timber on an open boat | 33 |
| Horizontal timbers | 18 |
| Horizontal view | 15 |
| Horizontal window piece | 23 |
| Horizontal, in music | 20 |
| Horizontal, like this answer: abbr. | 35 |
| Horizontal, on a puzzle: abbr. | 30 |
| Horizontal, perhaps | 19 |
| Horizontal-bar exercise | 23 |
| Horizontal: Abbr. | 17 |
| Horizontally | 12 |
| Horizontally level | 18 |
| Horizontally: Abbr. | 19 |
| Hormel canned it in 1937; Congress, in 2003 | 43 |
| Hormel competitor | 17 |
| Hormel discards? | 16 |
| Hormel meat product | 19 |
| Hormel product | 14 |
| Hormonal gardening aid | 22 |
| Hormonally active type | 22 |
| Hormone | 7 |
| Hormone in the pill | 19 |
| Hormone or vitamin D | 20 |
| Hormone producer | 16 |
| Hormone regulator | 17 |
| Hormone secreters | 17 |
| Hormone shot | 12 |
| Hormone source | 14 |
| Hormone substance | 17 |
| Hormuz native | 13 |
| Hormuz's nation | 19 |
| Horn | 4 |
| Horn & Hardart eateries | 27 |
| Horn & Hardart eatery | 25 |
| Horn & Hardart's coin-op restaurant | 43 |
| Horn accessory | 14 |
| Horn and Cod | 12 |
| Horn and Hatteras | 17 |
| Horn and May | 12 |
| Horn and Vic | 12 |
| Horn beep | 9 |
| Horn blare | 10 |
| Horn blast | 10 |
| Horn blower | 11 |
| Horn blower Al | 14 |
| Horn blower in an old folk song | 31 |
| Horn blower of folk music | 25 |
| Horn blower of rhyme | 20 |
| Horn Dana Colley played in Morphine | 35 |
| Horn emanations | 15 |
| Horn for a Muppet named Zoot | 28 |
| Horn great | 10 |
| Horn heard in submarine movies | 30 |
| Horn honk | 9 |
| Horn honker of classic comedy | 29 |
| Horn honks | 10 |
| Horn in | 7 |
| Horn in (on) | 12 |
| Horn in on a party | 18 |
| Horn in on? | 11 |
| Horn in? | 8 |
| Horn inventor Adolphe | 21 |
| Horn is one | 11 |
| Horn leader | 11 |
| Horn made famous at the 2010 World Cup | 38 |
| Horn made from a ram's horn | 31 |
| Horn material | 13 |
| Horn muffler | 12 |
| Horn mutes | 10 |
| Horn noises | 11 |
| Horn note | 9 |
| Horn of a crescent moon | 23 |
| Horn of a roebuck | 17 |
| Horn of a ruminant | 18 |
| Horn of Afr. country | 20 |
| Horn of Afr. nation | 19 |
| Horn of Africa | 14 |
| Horn of Africa country | 22 |
| Horn of Africa dweller | 22 |
| Horn of Africa gulf | 19 |
| Horn of Africa nation | 21 |
| Horn of Africa native | 21 |
| Horn of Africa natives | 22 |