Synonyms of 'ill-assorted'
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If one thing or person is incompatible with another, they are very different in important ways, and do not suit each other or agree with each other.
Their interests were mutually incompatible.
Someone or something that is incongruous seems strange when considered together with other aspects of a situation.
She looked incongruous in an army uniform.
Thesaurus for ill-assorted from the Collins English Thesaurus
badly matched ; incompatible