Synonyms of 'everyone'
Everyone and everybody are interchangeable, and can be used as synonyms of each other in any context. Care should be taken, however, to distinguish between everyone as a single word and every one as two words, the latter form correctly being used to refer to each individual person or thing in a particular group: every one of them is wrong.
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Thesaurus for everyone from the Collins English Thesaurus
You use everyone or everybody to refer to all the people in a particular group.