proviso
From LSJ
subs.
P. and V. λόγοι, οἱ. Clause in an agreement: P. γράμμα, τό. Agreement: P. and V. σύμβασις, ἡ; see agreement. With this proviso: P. and V. ἐπὶ τούτοις, ἐπὶ τοῖσδε. With the proviso that: Ar. and P. ἐφʼ ᾧτε (infin.), P. and V. ὥστε (infin.).