غَاشٌّ

Acting, or advising or counselling, dishonestly, or insincerely; or acting with dissimulation; pretending the contrary of what one conceives in his mind: [see its verb;] plural غِشَشَةٌ and [quasipl. n., like as صَحَابَةٌ is of صَاحِبٌ,] غَشَاشَةٌ (TA.)