self-originating
adjectiveUK /ˌselfəˈrɪdʒɪneɪtɪŋ/
US /ˌselfəˈrɪdʒəneɪtɪŋ/
Starting by itself without help from anyone or anything else.
The little robot's self-originating movements surprised everyone in the lab.
OTHER MEANINGS
2. Arising from within a person rather than from outside influence.
Her self-originating kindness made her help others without being asked.
3. Beginning or coming into being on its own, without an external cause.
Scientists studied the self-originating sparks inside the special crystal.
4. Created or set in motion by the thing itself.
The story describes a self-originating cycle that keeps the garden growing.