unsolicited

As adjectives the difference between spontaneous and unsolicited

is that spontaneous is self-generated; happening without any apparent external cause while unsolicited is not requested, welcome or invited.

As an adjective unsolicited

is not requested, welcome or invited.

As a noun null is

zero, nil; the cardinal number before einn.

As a letter s

is the letter s with a.

As an adjective unsolicited is

not requested, welcome or invited.

As adjectives the difference between unsolicited and false

is that unsolicited is not requested, welcome or invited while false is (label) one of two states of a boolean variable; logic.

As adjectives the difference between unsolicited and unbidden

is that unsolicited is not requested, welcome or invited while unbidden is not invited, requested or asked for.

As adjectives the difference between speculative and unsolicited

is that speculative is characterized by speculation; based on guessing or unfounded opinions while unsolicited is not requested, welcome or invited.

As adjectives the difference between unwarranted and unsolicited

is that unwarranted is not warranted; unjustified; being without warrant, authority, or guaranty; unwarrantable while unsolicited is not requested, welcome or invited.

As adjectives the difference between uncalled and unsolicited

is that uncalled is not called while unsolicited is not requested, welcome or invited.

As adjectives the difference between unsolicited and unwanted

is that unsolicited is not requested, welcome or invited while unwanted is not wanted, welcome or acceptable.

As a noun unwanted is

one who or that which is not wanted; an undesirable.

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.