Immature or lacking in maturity.

अपरिपक्व

English Usage: His unmature actions led to serious consequences.

Hindi Usage: उसके अपरिपक्व कार्यों के गंभीर परिणाम हुए।

Not yet fully developed or matured.

पूर्ण विकसित नहीं हुआ

English Usage: The unmatured fruits were not ready for harvest.

Hindi Usage: अपूर्ण विकसित फल कटाई के लिए तैयार नहीं थे।