From Latin genius#Latin|genius, household guardian spirit, from gens#Latin|gens, tribe.
genius (plural: genii (classical Roman mythology) or geniuses (colloquial))
Category:English nouns with irregular plurals
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From Latin gens, household, clan, tribe + suffix -ius.
genius , genitive singular and nominative plural genii
Second declension noun
Category:Latin nouns
fa:genius fr:genius ko:genius io:genius it:genius ku:genius hu:genius ja:genius fi:genius ta:genius te:genius vi:genius zh:genius