συνθήκη συνθήκη, ἡ, συντίθημι a composition, of words and sentences, Luc. a conventional agreement, convention, compact, Plat., Arist.; ἐκ συνθήκης, ex composito, by agreement, Plat.; κατὰ συνθήκην conventionally, Arist. the article of a compact or treaty, Thuc.:—mostly in pl. the articles of agreement, and collectively, a contract, compact, covenant, treaty, Hdt., Attic; συνθήκας ποιέεσθαί τινι Hdt., Ar.; ἐκ τῶν συνθηκῶν according to the covenant, Isocr.; κατὰ τὰς σ. Thuc.