unobserved
From LSJ
ῥίζα γὰρ πάντων τῶν κακῶν ἐστιν ἡ φιλαργυρία → root of all the evils is the love of money, for every possible kind of evil can be motivated by the love of money
English > Greek (Woodhouse)
adjective
do a thing unobserved: P. and V. λανθάνειν ποιῶν τι, V. λήθειν ποιῶν τι.
unobserved by: use Ar. and V. λάθρα (gen.), P. κρύφα (gen.).