Unimpassioned is a related term of undemonstrative.
As adjectives the difference between unimpassioned and undemonstrative
is that unimpassioned is not impassioned; lacking passion; without emotion while undemonstrative is not given to showing emotion or feelings; reserved or distant.
unimpassioned
English
Adjective
(
en adjective)
Not impassioned; lacking passion; without emotion.
Derived terms
* unimpassionedly