VOLUNTARY

/ˈvɒ.lən.tɹi/ ► audio Scrabble 15 Words With Friends 18

Scrabble letter values: V₄O₁L₁U₁N₁T₁A₁R₁Y₄ = 15

Definition

adjective of your own free will or design.
adjective controlled by individual volition.
noun (military) a person who freely enlists for service. — synonyms: volunteer, military_volunteer
noun composition (often improvised) for a solo instrument (especially solo organ) and not a regular part of a religious service or musical performance.