We don't have synonyms for unchair yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are unchain, unhair and enchair.
(v) :
(figurative, transitive) To take away someone's status and authority, especially if that status and authority is represented by a chair such as a throne or an academic chair; unseat.
(v) :
(rare, ambitransitive) To get out of or to remove from a chair.
(v) :
(figurative, transitive) To take away someone's status and authority, especially if that status and authority is represented by a chair such as a throne or an academic chair; unseat.
(v) :
(rare, ambitransitive) To get out of or to remove from a chair.