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
Other maturity-based age descriptors are thilikian, anatrikian, enilikian, and palaikian.

Systeen and sysdult may fall into this category.

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