Unconsonant is an adjective that means discordant or incompatible. There are several synonyms for this word, such as incongruent, unharmonious, and dissonant. Incongruent describes things that are not in harmony or not suitable for each other. Unharmonious refers to a lack of agreement or cohesiveness in a group or a situation. Dissonant describes a sound or a musical note that is not pleasing to the ear due to a lack of harmony. Other synonyms for unconsonant include conflicting, incompatible, and contrasting. These words can be used interchangeably with unconsonant to describe anything that does not fit or blend well together.