IPA: /ɪmˈprɪmətər/
KK: /ɪmˈprɪmətər/
A mark or sign of official approval, especially for publishing or printing, often given by a high authority.
The book received the imprimatur from the church, allowing it to be published.
Imprimatur is derived from the Latin "imprimere" (meaning to print) and "-tur" (a suffix indicating a third person singular present passive). The term originally referred to a license or approval to print a book, indicating that it has been authorized for publication.
Think of 'printing' ('imprimere') as a way to remember that 'imprimatur' means an official approval to print something.
No commonly confused words.