shrewd
shrewd \'shru:d, esp South 'sru:d\ aj [ME shrewe + -ed] archaic 1:
MISCHIEVOUS obs 2: SHREWISH, ABUSIVE obs 3: OMINOUS, DANGEROUS 4a:
SEVERE, HARD {~ knock} 4b: BITING, PIERCING {~ wind} 5a: marked by
cleverness, discernment, or sagacity : ASTUTE 5b: WILY, TRICKY lies
practical, hardheaded cleverness and judgment and acute perception;
SAGACIOUS suggests wisdom, penetration, and farsightedness; PERSPICACIOUS
implies unusual power to see through and understand what is dark or hidden;
ASTUTE suggests shrewdness, perspicacity, and diplomatic skill - shrewd.ly
av SYN syn SAGACIOUS, PERSPICACIOUS, ASTUTE: SHREWD imp