Unconventional is a related term of unfitting.
As adjectives the difference between unconventional and unfitting
is that unconventional is not adhering to convention or accepted standards while unfitting is that is not fitting for its purpose.
As a noun unconventional
is something or someone that is unconventional.
unconventional
English
Adjective
(
en adjective)
Not adhering to convention or accepted standards
Out of the ordinary
Atypical
Noun
(
en noun)
Something or someone that is unconventional.