Neanikian

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Neanikian describes a maturity level for headmates that is not yet fully grown but associated with independence and self-reliance to some degree. This may correspond to the human age of teenagers and young adult, to adolescent stages in animals, or to a nonhuman equivalent.

Related Terms
This term uses the -ikian suffix.

Systeen and sysdult may fall into this category.

History
The term comes from the greek "neaniskos" for youngster, and "ilikia" for age.