'low-toned' definitions:

Definition of 'low-toned'

(from WordNet)
adjective
Very low in volume; "a low murmur"; "the low-toned murmur of the surf" [syn: low, low-toned]

Definition of 'low-toned'

From: GCIDE
  • low-toned \low-toned\ adj. relatively low in volume; soft; -- of sound; as, making low-toned noises with their mouths that went as an undercurrent of sound. Opposite of loud.
  • Syn: low, subdued, soft. [WordNet 1.5]