ἀδράνεια
From LSJ
ἐπέμψατε ἀγγέλους τοῖς ἀλλήλοις ὥστε ἔγνωτε τὸν κίνδυνον → you sent messengers to one another so that you knew the danger
English (LSJ)
or ἀδραν-ία, ἡ,
A listlessness, weakness, Hdn.2.10.8, Just.Nov. 102.3: Ep. ἀδρανίη, A.R.2.200, Call.Fr.520, AP6.296 (Leon.), etc. II non-efficiency, τοῦ μὴ ὄντος Simp.in Cael.136.30. [δρᾰ.]