1. (a.) Resembling a serpent; having the shape or qualities of a serpent; subtle; winding or turning one way and the other, like a moving serpent; anfractuous; meandering; sinuous; zigzag; as, serpentine braid.

2. (n.) A mineral or rock consisting chiefly of the hydrous silicate of magnesia. It is usually of an obscure green color, often with a spotted or mottled appearance resembling a serpent's skin. Precious, or noble, serpentine is translucent and of a rich oil-green color.

3. (n.) A kind of ancient cannon.

4. (v. i.) To serpentize.

Byzantine Machiavellian Machiavellic Mephistophelian aberrant aberrative acute affluent ambagious amphibian anfractuous anguiform anguine arch artful astute bad batrachian bent billowing billowy cagey canny circuitous circumlocutory clever colubriform complex complicated confluent conniving convoluted convolutional coursing crafty crawling creeping crocodilian crooked cunning curvaceous curvate curvated curve curved curvesome curviform curvilineal curvilinear curving curvy cute deceitful decurrent deep deep-laid defluent demoniac demonic departing designing desultory deviant deviating deviative deviatory devilish devious diabolic diabolical diffluent digressive diplomatic discursive eellike errant erratic evil excursive feline flexuose flexuous flowing fluent fluxional fluxive foxy froggy geosynclinal guileful gulfy gushing incurvate incurvated incurved incurving indented indirect ingenious insidious inventive involute involuted involutional knowing labyrinthine lizardlike lumbriciform mazy meandering meandrous notched ophidian out-of-the-way pawky planetary plotting politic pouring profluent racing rambling ready recurvate recurvated recurved recurving repent reptant reptile reptilelike reptilian reptiliform reptiloid resourceful rivose rivulose roundabout roving ruffled running rushing satanic saurian saw-toothed sawtooth scheming scored serpentiform serpentile serpentlike serpentoid serrate serrated serried sharp shifting shifty shrewd sinuate sinuose sinuous slick slippery slithering sluggish sly smooth snake-shaped snakelike snaking snaky sneaky sophistical stealthy strategic stray streaming subtile subtle supple surging surgy swerving tactical tidal toadish toothed torsional tortile tortuous trickish tricksy tricky turning twisting twisty undirected undulant unhallowed vagrant veering vermicular vermiculate vermiform viperiform viperish viperlike viperoid viperous vipery vortical vulpine wandering wary wavy whorled wily winding wormlike wreathlike wreathy zigzag