prerequisite
[noun]
Synonyms:
- requirement, condition, essential, must, necessity, precondition, qualification, requisite, sine qua non
[adjective]
Synonyms:
- required, essential, indispensable, mandatory, necessary, obligatory, requisite, vital

[TahlilGaran] English Synonym Dictionary ▲

pre‧req‧ui‧site /priːˈrekwəzət, priːˈrekwɪzət/ noun [countable]
formal something that is necessary before something else can happen or be done
prerequisite for/of/to
A reasonable proficiency in English is a prerequisite for the course.

[TahlilGaran] Dictionary of Contemporary English ▲

prerequisite
noun
ADJ. essential, important, necessary, vital | first
PREP. ~ for Training is a prerequisite for competence.
~ to Recognition is a prerequisite to understanding.

[TahlilGaran] Collocations Dictionary ▲