voluntary

As adjectives the difference between voluntary and unprompted

is that voluntary is done, given, or acting of one's own free will while unprompted is not prompted.

As an adverb voluntary

is (obsolete) voluntarily.

As a noun voluntary

is (music) a short piece of music, often having improvisation, played on a solo instrument.

As nouns the difference between initiative and voluntary

is that initiative is a beginning; a first move while voluntary is a short piece of music, often having improvisation, played on a solo instrument.

As adjectives the difference between initiative and voluntary

is that initiative is serving to initiate; inceptive; initiatory; introductory; preliminary while voluntary is done, given, or acting of one's own free will.

As an adverb voluntary is

voluntarily.

As nouns the difference between legality and voluntary

is that legality is lawfulness while voluntary is (music) a short piece of music, often having improvisation, played on a solo instrument.

As an adjective voluntary is

done, given, or acting of one's own free will.

As an adverb voluntary is

(obsolete) voluntarily.

As nouns the difference between convenience and voluntary

is that convenience is the quality of being suitable, useful or convenient while voluntary is (music) a short piece of music, often having improvisation, played on a solo instrument.

As an adjective voluntary is

done, given, or acting of one's own free will.

As an adverb voluntary is

(obsolete) voluntarily.

In obsolete terms the difference between voluntary and free

is that voluntary is voluntarily while free is freely; willingly.

As a verb free is

to make free; set at liberty; release; rid of that which confines, limits, embarrasses, or oppresses.

As adjectives the difference between voluntary and unsolicited

is that voluntary is done, given, or acting of one's own free will while unsolicited is not requested, welcome or invited.

As an adverb voluntary

is voluntarily.

As a noun voluntary

is a short piece of music, often having improvisation, played on a solo instrument.

Voluntary is a related term of uncompelled.

As adjectives the difference between voluntary and uncompelled

is that voluntary is done, given, or acting of one's own free will while uncompelled is not compelled; voluntary.

As an adverb voluntary

is (obsolete) voluntarily.

As a noun voluntary

is (music) a short piece of music, often having improvisation, played on a solo instrument.

As adjectives the difference between voluntary and primary

is that voluntary is done, given, or acting of one's own free will while primary is the first in a group or series.

As nouns the difference between voluntary and primary

is that voluntary is a short piece of music, often having improvisation, played on a solo instrument while primary is a primary election; a preliminary election to select a political candidate of a political party.

As an adverb voluntary

is voluntarily.

As a verb primary is

to take part in a primary election.

Instinctive is a synonym of voluntary.

As adjectives the difference between instinctive and voluntary

is that instinctive is related to or prompted by instinct while voluntary is done, given, or acting of one's own free will.

As an adverb voluntary is

(obsolete) voluntarily.

As a noun voluntary is

(music) a short piece of music, often having improvisation, played on a solo instrument.

As nouns the difference between voluntary and vocation

is that voluntary is a short piece of music, often having improvisation, played on a solo instrument while vocation is an inclination to undertake a certain kind of work, especially a religious career; often in response to a perceived summons; a calling.

As an adjective voluntary

is done, given, or acting of one's own free will.

As an adverb voluntary

is voluntarily.