Essential means absolutely necessary or important Hindi meaning of essential is given below:-

Essential
adjective
- आवश्यक
- अनिवार्य
- अनिवार्य सेवा
Examples:-
adjective
- it is very essential to maintain discipline in the army.
- सेना में अनुशासन बनाए रखना बहुत आवश्यक है।
noun
- Water is essential for body.
- पानी शरीर के लिए आवश्यक है।
Similar words :-
adjective
- necessary
- crucial
- need
- indispensable
- vital
noun
- necessity
- prerequisite
- requisite
Checkout the Hindi meaning of other English words.