without interest; dull and boring

lacking nutritional value

पोषणहीन

English Usage: The jejune diet left him feeling weak and deprived.

Hindi Usage: पोषणहीन आहार ने उसे कमजोर और वंचित महसूस कराया।

lacking interest or significance; dull

displaying a lack of maturity

अपरिपक्व

English Usage: His jejune comments during the meeting surprised everyone.

Hindi Usage: बैठक के दौरान उसकी अपरिपक्व टिप्पणियाँ सभी को चौंका गईं।