lightened up (verb) relent: die down; let up
Sinonime: artful, astute, canny, crafty, cunning, deceitful, deep, devious,
dishonest,
experienced, guileful, insidious, intelligent, knowing, retiary, sharp, slick, sly, subtle, tricky, vulpine, wily
Antonime: naive, unclever,
unintelligent, unsmart