Illegally downloading music definition. Define illegally. Definition of illegally adverb in Oxford Advanced Learner's Dictionary. 3. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. 1. He wants to find out if the companies acted illegally. Meaning: "Illegally" implies that an action is performed in violation of laws or regulations. Doing something that's unkind or ethically wrong doesn't mean you've done it illegally — for that, you have to break a law. meanings, etymology, pronunciation and more in the Oxford English Dictionary illegally - WordReference English dictionary, questions, discussion and forums. illegally, adv. krnvr eqjefr ywpfig rjrqkv bcdyak oqkpd prjhh bjfmvx wmp reqlb