διαλεπτύνω
From LSJ
οὕτως καὶ ἡ πίστις, ἐὰν μὴ ἔχῃ ἔργα, νεκρά ἐστιν καθ' ἑαυτήν → so even the Faith, if it does not have deeds, and is on its own, is dead | the Faith without works is dead
English (LSJ)
A make thin, pare away, fine down, Hp.Fract.11; grind small, Sch.E. Ph.1159:—Pass., become thin, watery, of a fluid, Ruf.Sat.Gon.15:— hence Subst. διαλέπτ-υνσις, εως, ἡ, Aët.16.55.