In a way that is difficult to understand or deal with because many things are involved; with complexity.
From complicated (past participle of complicate, from Latin complicatus) plus the adverbial suffix -ly. The meaning tracks the verb: to make complex or involve many interrelated parts.
Adding -ly to adjectives seems simple, but it creates a semantic puzzle—'complicatedly' doesn't just mean 'in a complicated manner,' it means the action itself creates or reveals complexity, making it different from just 'in a complex way.'
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