In a manner relating to catering or food provision; in the way a caterer would operate or serve.
From 'catering' (present participle of cater) plus the adverbial suffix '-ly', creating an adverb describing actions done in the style of catering.
The word suggests a whole philosophy—doing things 'cateringly' means organizing thoughtfully to make sure everyone is fed and cared for, which is actually a deep human value disguised in a simple word!
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