essential

/ɪsˈɛnʃə‍l/

/ɛˈsɛnʃəɫ/, /iˈsɛnʃəɫ/

essential

being very important or necessary

basic and fundamental

of the greatest importance

defining rights and duties as opposed to giving the rules by which rights and duties are established

antonyms : adjective

being or relating to or containing the essence of a plant etc

Essential

anything indispensable

synonyms : necessary

Examples

1. Regular exercise is essential for the healthfulness of your body and mind.

2. The presence of certain fungi, like Penicillium, is essential in the production of some types of cheese.

3. The heater is essential during the chilly nights.

4. Proper breathing techniques are essential in meditation for relaxation.