required

Must be done

Required means necessary or demanded by rule, law, or circumstance.

A required course must be taken to graduate.

Required reading is assigned, not optional.

The word often appears in bureaucratic or institutional contexts: All required documents must be submitted by Friday.

Something required is obligatory rather than merely recommended.

compulsory

mandatory

Required by rule

statutory · binding · conscripted · involuntary · coerced · decreed · commanded · dictated · regulated · compelled

essential

necessary

Indispensable, cannot omit

integral · core · key · basic · inherent · intrinsic · constitutive · underlying · elementary · primary

prerequisite

precondition

Necessary prior requirement

foundational · groundwork · basics · rudimentary · antecedent · prior · preceding · forerunner · stepping-stone · qualification

expected

demanded

Required with force

incumbent · due · owed · anticipated · customary · standard · conventional · protocol · norm · obligation

Categories
Opposites
necessity

requiredunnecessary

Not essential or required

unneeded · needless · nonessential · inessential · superfluous

obligation/compulsion

requiredoptional

Not mandatory

voluntary · elective · discretionary · noncompulsory · nonmandatory

surplus/excess

requiredextra

Additional, beyond necessary

spare · bonus · supplementary · additional · excess

Phrases
Family

require, requirement, requiring, requires, requirements, nonrequired

Familiarity
Top 2,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G