In a baggy manner; in a loose, droopy, or voluminous way.
From 'baggy' (adjective) plus the adverbial suffix '-ly' (Old English '-lice', from 'lic' meaning 'like' or 'body'). Adverbs modify verbs and describe how actions are performed.
English makes adverbs super easily by adding '-ly,' but it's interesting that we rarely use 'baggily' in speech—we're more likely to say 'that hangs baggily' than 'he dressed baggily.' It shows that some grammatically perfect words rarely escape the written page.
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