Of your own volition and Unprompted

Unprompted and of your own volition are semantically related. In some cases you can use "Unprompted" instead an adverb phrase "Of your own volition".

Unprompted adjective - Proceeding from natural feeling or impulse without external stimulus.

Of your own volition and unprompted are semantically related. Sometimes you can use "Of your own volition" instead an adverb "Unprompted".