ammettevi
Ammettevi is a nonstandard Italian verb form that commonly appears as a misspelling or dialectal variant of the second-person plural imperative ammettetevi. It is derived from the verb ammettere (to admit) and the reflexive pronoun usage found in ammettersi (to admit oneself). In standard Italian the correct imperative for voi with a reflexive verb is ammettetevi or, when used without the reflexive, ammettete. The form ammettevi is not listed as a correct standard form in modern grammars and is rarely encountered in formal writing.
The base is ammettere, with the reflexive sense expressed by ammettersi. When forming the imperative for voi
Ammettevi occurs primarily in informal speech, historical texts, or OCR-transcribed material where orthography is inconsistent. In
Correct standard: Ammettetevi di avere ragione. Non è facile ammettere di aver commesso l’errore.