In a manner that shows a lack of loyalty or faithfulness to someone or something.
From disloyal (adjective) + -ly (adverbial suffix). The formation is straightforward: dis- + loyal + -ly, creating an adverb form to describe actions done without loyalty.
This word reveals how English uses the -ly suffix to turn character judgments into action descriptions—you can be disloyal (who you are) or act disloyally (what you do), which is why this tiny suffix matters in blaming specific betrayals.
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