Adjective
-
not easily irritated
"an equable temper"
"not everyone shared his placid temperament"
"remained placid despite the repeated delays"
- even tempered - good tempered -
(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"