Lacking in musical qualities, such as melody or harmony. (adjective)
Sounding harsh to the ear; dissonant. (adjective)
Not skilled or interested in music. (adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "unmusical" in a sentence
"QUOTATION: A name unmusical to the Volscians ears,"
"The contrast within the Scripture of the musical and the unmusical is a very marked one."
"I'm not a very good singer and I am not completely "unmusical," but I am close."