land that has not been developed or built upon

not fully grown or matured; too primitive

अभी तक विकसित नहीं हुआ

English Usage: His ideas were still undeveloped and needed more thought before presenting them.

Hindi Usage: उसके विचार अभी तक विकसित नहीं हुए थे और पेश करने से पहले और सोचने की जरूरत थी।