nimble witted (adjective) canny: clever, artful
Sinonime: Mayday, SOS, alert, bell,
blast, buzzer,
call,
caution, clock,
cry, drum, flap,
flash*, forewarning, gong, high sign, horn, nod,
scramble*,
scream,
shout, sign, signal, siren, squeal,
tip, tip off, tocsin, trumpet, warning, whistle, wink,
yellAntonime: foolish,
inept,
silly