We don't have synonyms for subjunctives yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are subjunctive, subjunctively and subjunctions.
(adj) :
(grammar, of a verb) Inflected to indicate that an act or state of being is possible, contingent or hypothetical, and not a fact.
(n) :
(countable) A form in the subjunctive mood.
(n) :
(grammar, uncountable) Ellipsis of subjunctive mood. [(grammar) Mood expressing an action or state which is hypothetical or anticipated rather than actual, including wishes and commands.]
(adj) :
(grammar, of a verb) Inflected to indicate that an act or state of being is possible, contingent or hypothetical, and not a fact.
(n) :
(countable) A form in the subjunctive mood.
(n) :
(grammar, uncountable) Ellipsis of subjunctive mood. [(grammar) Mood expressing an action or state which is hypothetical or anticipated rather than actual, including wishes and commands.]