begun.

That has begun, or has been begun.

Set on foot, started, introduced.

Begun; graduated: see the v.

Commenced, originated.

figurative. Of an abstract or immaterial thing (now esp. an idea, organization, or movement): brought into existence; created, initiated…

Begun, commenced, introduced: see initiate, v. 1 tenant by the Curtesy initiate: see quot. 1767, and cf. quot. 1883 at initiate, v. 1a.