Untrained is a related term of ineffective.
As adjectives the difference between untrained and ineffective
is that untrained is lacking training, not having been instructed in something while ineffective is not having the desired effect; ineffectual.
untrained
English
Adjective
(
en adjective)
Lacking training, not having been instructed in something.
Synonyms
* See also
ineffective
English
Adjective
(
en adjective)
not having the desired effect; ineffectual
lacking in ability; incompetent or inadequate