Impass
Impasse is a largely obsolete or dialectal variant of impass. In contemporary English, impasse denotes a standstill or blocked path—literal or figurative—in negotiations, planning, or travel. The form impass appears only rarely, usually in older texts, and is typically considered a spelling variant or error rather than a distinct word.
Etymology and history: Impasse comes from the French impasse, meaning a dead end. In English print, impasse
Usage notes: In modern dictionaries, impass is listed as obsolete, dialectal, or rare. Most editors would correct