WordNet: placid, quiet, smooth, still, tranquil, 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"
- similar to calm
placid
- (englanti) placidness (derivationally related)
- (suomi) tyyni (synonyymi)
quiet
smooth
- (englanti) smoothness (derivationally related)
- (suomi) tyyni (synonyymi)
still
tranquil
- (englanti) tranquillity (derivationally related)
- (englanti) tranquility (derivationally related)
- (englanti) tranquillity (derivationally related)
- (suomi) tyyni (synonyymi)
unruffled
- (suomi) tyyni (synonyymi)