author A2

/ˈoː.θə/ A person who writes a book, article, or other work.

authorize B2

/ˈɔθəɹaɪz/ To give someone official permission to do something.

authorization C2+

/ˌɔθɚrɪˈzeɪʃən/ official permission or sanction to do something

authoritarian C2+

/əˌθɔrɪˈtɛriən/ favouring strict obedience to authority over personal freedom

authorship C2+

/ˈɔθɚˌʃɪp/ the fact or identity of having written a particular work