| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | sneaky, tricky |
| Synonyms: | Machiavellian, artful, astute, corrupt, crafty, crooked, cunning, dangerous, deceitful, deceptive, deep, designing, dishonest, disingenuous, duplicitous, ensnaring, false, foxy, guileful, intriguing, like a snake in the grass, perfidious, perilous, secret, slick, sly, smooth, snaky, sneaking, stealthy, subtle, surreptitious, treacherous, wily, wormlike |
| Notes: | insidious (Latin insidere 'to lie in wait for,' from sedere 'sit') describes stealthy, treacherous behavior; invidious behavior arouses ill will, animosity, or hostility |
| Antonyms: | fair, honest, open, sincere |