sly
sly \'sli-\ \'sli-(-*)r\ \'sli--*st\ aj or sli.er also sly.er; also sli.est; also sly.est [ME sli, fr. ON sloegr; akin to OE sle-an to strike - mo]re at SLAY chiefly dial 1a: CANNY, SHREWD 1b: displaying cleverness : INGENIOUS 2a: artfully cunning : CRAFTY 2b: SECRETIVE, FURTIVE 3: lightly mischievous : ROGUISH MWILY, ARTFUL mean attaining one's ends by devious means. SLY implies lack of candor, furtiveness, and skill in concealing one's intentions and methods; CUNNING suggests the effective use of sometimes limited intelligence in evading or circumventing; CRAFTY implies clever cunning and subtlety of method; TRICKY may stress unscrupulous cunning; FOXY suggests shrewd and wary craftiness; WILY stresses astuteness in tricking or laying traps; ARTFUL suggests insinuating or ingratiating craftiness : FURTIVELY - sly.ly av SYN syn SLY, CUNNING, CRAFTY, TRICKY, FOXY,
Webster's English Dictionary