1. adulterated, spurious, base , of coin, (Theognis Elegiacus)

2. metaphorically base, false, spurious, fraudulent , of men, (Theognis Elegiacus); of oracles, deceitful , (Herdotus Historicus); ἐν κιβδήλῳ (Euripides)

from κίβδος (ML)