Antonyms of adj placid

2 senses of placid

Sense 1
placid, quiet, still, tranquil, smooth, unruffled -- ((of a body of water) free from disturbance by heavy waves; "a ribbon of sand between the angry sea and the placid bay"; "the quiet waters of a lagoon"; "a lake of tranquil blue water reflecting a tranquil blue sky"; "a smooth channel crossing"; "scarcely a ripple on the still water"; "unruffled water")

INDIRECT (VIA calm) -> stormy -- ((especially of weather) affected or characterized by storms or commotion; "a stormy day"; "wide and stormy seas")

Sense 2
equable, even-tempered, good-tempered, placid -- (not easily irritated; "an equable temper"; "not everyone shared his placid temperament"; "remained placid despite the repeated delays")

INDIRECT (VIA good-natured) -> ill-natured -- (having an irritable and unpleasant disposition)

Similarity of adj placid

2 senses of placid

Sense 1
placid, quiet, still, tranquil, smooth, unruffled -- ((of a body of water) free from disturbance by heavy waves; "a ribbon of sand between the angry sea and the placid bay"; "the quiet waters of a lagoon"; "a lake of tranquil blue water reflecting a tranquil blue sky"; "a smooth channel crossing"; "scarcely a ripple on the still water"; "unruffled water")
       => calm (vs. stormy) -- ((of weather) free from storm or wind; "calm seas")

Sense 2
equable, even-tempered, good-tempered, placid -- (not easily irritated; "an equable temper"; "not everyone shared his placid temperament"; "remained placid despite the repeated delays")
       => good-natured (vs. ill-natured) -- (having an easygoing and cheerful disposition; "too good-natured to resent a little criticism"; "the good-natured policeman on our block"; "the sounds of good-natured play")