In a way that relates to or is required by a contract or legal agreement.
Formed from 'contractual' (adjective) plus the adverbial suffix '-ly', which comes from Old English 'lice' meaning 'like' or 'in the manner of'.
When something is done 'contractually', it means you legally agreed to do it—breaking a contractual obligation can land you in court, which is why this word matters so much in business.
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