<p><strong>Noun</strong></p><ul><li>Phonetics: (in English articulation) a speech sound produced by occluding with or without releasing (p, b; t, d; k, g), diverting (m, n, ng), or obstructing (f, v; s, z, etc.) the flow of air from the lungs (vowel).</li><li>(in a syllable) any sound other than the sound of greatest sonority in the syllable, as b, r, and g in brig (sonant).</li><li>Compare vowel (def 1b).</li><li>(in linguistic function) a concept empirically determined as a phonological element in structural contrast with vowel, as the b of be, the w of we, the y, s, and t of yeast, etc.</li><li>a letter that usually represents a consonant sound.</li></ul><p><strong>Adjective</strong></p><ul><li>in agreement;</li><li>agreeable;</li><li>in accord;</li><li>consistent (usually followed by to or with): behavior consonant with his character.</li><li>Synonyms: congruous, concordant.</li><li>corresponding in sound, as words.</li><li>harmonious, as sounds.</li><li>Music: constituting a consonance.</li><li>Antonyms: dissonant.</li><li>Physics: noting or pertaining to sounds exhibiting consonance.</li><li>consonantal.</li></ul>