arbitrary
adjective B2
Plain meaning
chosen without a clear reason or fair rule
Exam-register meaning
based on personal choice, chance, or unsupported judgement rather than objective criteria
In context
generalThe teacher's decision seemed arbitrary because no rule was explained.
examArbitrary restrictions on internet access can limit educational opportunities.
Common collocations
arbitrary decisionarbitrary rulearbitrary distinction
Watch out
Do not confuse 'arbitrary' with 'mandatory'. Arbitrary means not based on a clear reason.
Word family
arbitrarily (adverb)arbitrariness (noun)arbitrary (adjective)