Inconsistent, Inconstant, Indecisive, Indirect, Infirm, Ingenious, Insecure, Insidious, Insubstantial, Inventive, Irregular, Irresolute, Irresponsible, Knavish, Knowing, Lying, Malingering, Mazy, Mendacious, Mercurial, Moody, Perfidious, Perilous, Politic, Precarious, Privy, Provisional, Questionable, Quiet, Rambling, Ready, Resourceful, Restless, Risky, Roguish, Rotten, Roving, Scheming, Secret, Secretive, Serpentine, Shady, Shaky, Shameless, Shapeless, Sharp, Shifting, Shirking, Shrewd, Shuffling, Sinister, Skulking, Slick, Slinking, Slinky, Slippery, Sly, Smooth, Snaky, Sneaking, Sneaky, Spasmodic, Spineless, Stealthy, Strategic, Subtle, Supple, Surreptitious, Suspicious, Tactical, Temporary, Tentative, Ticklish, Traitorous, Treacherous, Tricky, Unaccountable, Uncertain, Uncommunicative, Unconscionable, Uncontrolled, Undercover, Underground, Underhand, Undisciplined, Unethical, Unfixed, Unobtrusive, Unpredictable, Unprincipled, Unreliable, Acute, Adrift, Afloat, Alternating, Ambidextrous, Amoral, Amorphous, Arch, Artful, Astute, Backstairs, Bent, Cagey, Calculating, Canny, Capricious, Changeable, Clandestine, Clever, Close, Conniving, Conspiratorial, Corrupt, Corrupted, Covert, Crafty, Criminal, Crooked, Cunning, Cute, Dangerous, Dark, Deceitful, Deceiving, Deep, Designing, Desultory, Devious, Diplomatic, Discreet, Dishonest, Dizzy, Dodging, Double, Doubtful, Dubious, Duplicitous, Eccentric, Elusive, Equivocating, Erratic, Evasive, False, Feline, Felonious, Fickle, Fishy, Fitful, Flickering, Flighty, Flitting, Fluctuating, Foxy, Fraudulent, Freakish, Furtive, Giddy, Hazardous, Immoral, Impetuous, Impulsive, Unrestrained, Unsavory, Unscrupulous, Unsettled, Unsound, Unstable, Unsteady, Unsubstantial, Unsure, Untrustworthy, Untruthful, Vacillating, Vagrant, Variable, Volatile, Vulpine, Wandering, Wanton, Wary, Wavering, Wavy, Wayward, Whimsical, Wily