| Word | Definitions | Synonyms |
|---|---|---|
| backstair | (adjective) secret and sly or sordid | Synonyms: backstairs, furtive |
| downstair | (adjective) on or of lower floors of a building | Synonyms: downstairs |
| stair | (noun) support consisting of a place to rest the foot while ascending or descending a stairway | Synonyms: step |
| upstair | (adjective) on or of upper floors of a building | Synonyms: upstairs |