| Word | Definitions | Synonyms |
|---|---|---|
| horizontally | (adverb) in a horizontal direction | - |
| horribly | (adverb) of a dreadful kind | Synonyms: awfully, dreadfully |
| horridly | (adverb) in a hideous manner | Synonyms: hideously, monstrously |
| horrifyingly | (adverb) in a horrifying manner | - |
| horseback | (adverb) on the back of a horse | Synonyms: ahorse, ahorseback |
| horticulturally | (adverb) by means of horticulture | - |