by nature

As one is

By nature describes an inherent or innate quality—something fundamental to a person or thing's character rather than learned or acquired.

She's shy by nature.

Cats are by nature solitary hunters.

The phrase implies the trait is permanent and essential, not situational or changeable.

Related

in essence · deep down · disposition · at heart · organic · intuitive · instinctive · hardwired · core · congenitally · predisposed · temperament · intrinsic · basic · constitutionally · true to form · habitual · born

Opposites
innate vs. acquired

by natureacquired

Came to possess

learned

natural vs. artificial

by natureby design

Done with intent

artificially · deliberately · synthetically · engineered · manufactured

essential vs. circumstantial

by natureby accident

Without intent or planning

by chance · incidentally · contingently · circumstantially · situationally

Family

natural, nature, naturally, unnatural, supernatural, naturalness, unnaturally, natures, naturalize

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