hellenise

verb
  1. 1

    To use the language and culture of the ancient Greeks, to become Hellenistic.

  2. 2

    To make or become Greek in character, language, culture, or civilization.

Source: https://en.wiktionary.org/wiki/Hellenise, https://en.wiktionary.org/wiki/Hellenize, https://en.wiktionary.org/wiki/hellenise