/ɪnˈkoʊɪt ˈɪnstrəmənt/ – Phrase
Definition: Tài liệu chưa hoàn thiện.
A more thorough explanation: a legal document that is not complete, especially because it has not been registered with an authority and must be registered to be effective
Example: An inchoate instrument can be perfected by the addition of a payee’s name, or an amount, etc.