<p><strong>Noun</strong></p><ul><li>a vocal utterance or series of speech sounds in one unvaried tone.</li><li>a single tone without harmony or variation in pitch.</li><li>recitation or singing of words in such a tone.</li><li>a person who is unable to discriminate between or to reproduce differences in musical pitch, especially in singing.</li><li>sameness of tone or color, sometimes to a boring degree.</li></ul><p><strong>Adjective</strong></p><ul><li>monotonous: consisting of or characterized by a uniform tone of one color.</li><li>a monotone drape.</li></ul><p><strong>Mathematics</strong></p><ul><li>monotonic.</li></ul><p><strong>End of Response</strong></p>