adjective

essential

Translation

essential, vital, necessary, crucial

Water is essential for life.

The essential problem is a lack of funding.

((for sth./sb.)) necessary for (sth./sb.) Good sleep is essential for health.

((to sth.)) necessary to (sth.) Practice is essential to learning a skill.

it is essential ((to-inf)) it is necessary (to do sth.) It is essential to follow the rules.

Synonyms: crucial, vital, necessary, indispensable; Antonyms: nonessential, unimportant, optional

From Latin 'essentia' (essence, being), from 'esse' (to be). It refers to the 'being' part of something.

Think of the word 'essence'. The 'essential' part of something is its very 'essence'.