ROGET THESAURUS
Clearness
Voice
N
voice, vocality, organ, lungs, bellows, good voice, fine voice, powerful voice, musical voice, intonation, tone of voice, vocalization, cry, strain, utterance, prolation, exclamation, ejaculation, vociferation, ecphonesis, enunciation, articulation, articulate sound, distinctness, clearness, of articulation, stage whisper, delivery, accent, accentuation, emphasis, stress, broad accent, strong accent, pure accent, native accent, foreign accent, pronunciation, homonym, orthoepy, cacoepy, euphony, gastriloquism, ventriloquism, ventriloquist, polyphonism, polyphonist, phonology, vocal, phonetic, oral, ejaculatory, articulate, distinct, stertorous, euphonious, how sweetly sounds the voice of a good woman, the organ of the soul, thy voice is a celestial melody.
Intelligibility
N
intelligibility, clearness, explicitness, lucidity, comprehensibility, perspicuity, legibility, plain speaking, precision, phonanta synetoisy, a word to the wise, intelligible, clear, clear as day, clear as noonday, lucid, perspicuous, transpicuous, luminous, transparent, easily understood, easy to understand, for the million, intelligible to the meanest capacity, popularized, plain, distinct, explicit, positive, definite, graphic, expressive, illustrative, unambiguous, unequivocal, unmistakable, unconfused, legible, recognizable, obvious, in plain terms, in plain words, in plain English, he that runs may read.