welltuned (adjective) melodious/melodic: harmonious, musical
Sinonime: accordant,
agreeable, assonant, canorous,
clear, concordant,
dulcet, euphonic, euphonious, harmonic, in tune,
mellifluous,
mellow,
pleasing,
resonant, silvery,
soft, songful,
sweet, sweet-sounding, symphonic, symphonious, tuned, tuneful, well-tuned
Antonime: cacophonous,
discordant, grating,
harsh, inharmonious, unmelodic, unmusical