Disposed or acting so as to deceive; deceitful; treacherous; false in intent.Inconstant; unstable; likely to change from caprice, irresolution, or instability: rarely applied to things except in poetry or by personification.Perilous; ticklish.Synonyms Variable, mutable, changeable, unsteady, unsettled, vacillating, fitful, volatile.To deceive; flatter.To puzzle; perplex; nonplus.