essential

needed or important for a particular purpose or situation; very necessary

esencial, necesario

• be essential to do something
• be essential for doing something

Collocations essential equipment · essential information

• It is essential that we start early.

  Es esencial que comencemos temprano.

basic and important; forming the basis of something

fundamental, básico

• be essential to a subject or area

Collocations essential skills · essential knowledge

• Mathematics is an essential part of the curriculum.

  Las matemáticas son una parte esencial del currículo.

a thing that is needed or important for a particular purpose or situation; something very necessary

esencia, elemento esencial

• an essential for doing something

Collocations essential items · essential supplies

• Sunscreen is an essential when you go to the beach.

  El protector solar es un elemento esencial cuando vas a la playa.