| Word | Definitions | Synonyms |
|---|---|---|
| airsick | (adjective) experiencing motion sickness | Synonyms: air sick, carsick, seasick |
| backstairs | (adjective) secret and sly or sordid | Synonyms: backstair, furtive |
| downstairs | (adjective) on or of lower floors of a building | Synonyms: downstair |
| hairsplitting | (adjective) developed in excessively fine detail | Synonyms: finespun |
| upstairs | (adjective) on or of upper floors of a building | Synonyms: upstair |