Synonyms of sneaky

1 Syllable
low, sly, mean, base, wily
2 Syllables
backstairs, sneaking, shiftier, yellow, recreant, roguish, stealthy, snaking, tricky, wilier, devious, doubtful, stealthiest, shiftiest, snide, nasty, shifty, stealthier
3 Syllables
deceitful, sidelong, cowardly, dishonest, two-faced, longwinded, guileful, lubricious, untruthful, malicious, indirect, slippery, furtive, vipery, underhand
4 Syllables
contemptible, untrustworthy, secretive, cloak-and-dagger, underhanded, unscrupulous, unreliable, double-dealing, duplicitous, huggermugger, deceptive, dirty-dealing, disingenuous, unethical, clandestine, surreptitious
5 Syllables
under-the-table, unconscionable
6 Syllables
prevaricatory, circumlocutory