Antonyms of adj downstair

1 sense of downstair

Sense 1
downstairs (vs. upstairs), downstair -- (on or of lower floors of a building; "the downstairs (or downstair) phone")


Similarity of adj downstair

1 sense of downstair

Sense 1
downstairs (vs. upstairs), downstair -- (on or of lower floors of a building; "the downstairs (or downstair) phone")
       => ground-floor -- (on the floor closest to level with the ground; "the ground-floor entrance is kept locked")