Synonyms of 'fill someone in'
▷ See fill
informDictionary, acquaint, advise of
I'll fill him in on the details.
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If you acquaint someone with something, you tell them about it so that they know it. If you acquaint yourself with something, you learn about it.
I want to acquaint myself with your abilities and your weaknesses.
Have steps been made to acquaint them with their rights?
If you inform someone of something, you tell them about it.
They would inform him of any progress they had made.
Thesaurus for fill someone in from the Collins English Thesaurus