to the core

to the core

1. Completely, down to one's very essence.

   Synonyms: to the bone; see also Thesaurus:to the full

• rotten to the core

• “to the core”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
• “to the core”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.
• “to the core”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present.
• “to the core” in Longman Dictionary of Contemporary English, Longman.
• “to the core” (US) / “to the core” (UK) in Macmillan English Dictionary.
• “to the core”, in Collins English Dictionary.