Gratuitous vs Undefined - What's the difference?

As adjectives the difference between gratuitous and undefined

is that gratuitous is given freely; unearned while undefined is lacking a definition or value.

(en adjective)

Given freely; unearned.

Not called for by the circumstances; uncalled-for; without reason, cause, or proof; adopted or asserted without any good ground; unjustified.

gratuitous violence

* unjustified * groundless * baseless * unfounded * unnecessary

* onerous

* gratuitousness * gratuitous praise * gratuitous violence

* superfluous

* *

(wikipedia undefined) (-)

Lacking a definition or value.

(mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.

The result of division by zero is undefined .

* defined