adj.
VERBS
▪ appear , be , seem
▪ become
▪
It is becoming almost ~ for students to have a second language.
▪ remain
▪ make sth
▪
Increased competition makes it ~ for the business to innovate.
▪ consider sth , deem sth , find sth , regard sth as , see sth as , think sth
▪
Do you consider these textbooks ~ for the course?
ADVERB
▪ really , truly , very ( AmE )
▪ absolutely
▪ almost , virtually
▪ fairly
▪ clearly
▪
A printer is clearly ~ to such a task.
▪ equally
▪
Diet is crucial; exercise is equally ~.
▪ by no means
▪
Although useful, the accessories are by no means ~.
PREPOSITION
▪ for
▪
the skills ~ for success
▪ to
▪
He believed that some form of religion was ~ to human life.
Essential is used with these nouns: ↑ accessory , ↑ accompaniment , ↑ aid , ↑ aspect , ↑ attribute , ↑ character , ↑ characteristic , ↑ component , ↑ concept , ↑ core , ↑ detail , ↑ difference , ↑ dilemma , ↑ dimension , ↑ distinction , ↑ element , ↑ equipment , ↑ facility , ↑ feature , ↑ function , ↑ guide , ↑ ingredient , ↑ item , ↑ link , ↑ maintenance , ↑ mineral , ↑ nature , ↑ need , ↑ oil , ↑ part , ↑ preliminary , ↑ prelude , ↑ prerequisite , ↑ principle , ↑ property , ↑ protein , ↑ quality , ↑ reading , ↑ reference , ↑ repair , ↑ requirement , ↑ role , ↑ service , ↑ skill , ↑ spirit , ↑ step , ↑ task , ↑ thing , ↑ tool , ↑ training , ↑ truth , ↑ unity , ↑ vitamin , ↑ vocabulary