De or het traditionalisme?

The correct Dutch article is:

het traditionalisme

Rule Words ending in -isme: almost always het. See the rule

How to use traditionalisme

the traditionalismehet traditionalisme
this traditionalismedit traditionalisme
that traditionalismedat traditionalisme
our traditionalismeons traditionalisme
your traditionalismejouw traditionalisme
every traditionalismeelk traditionalisme
which traditionalisme?welk traditionalisme?
a big traditionalisme / the big traditionalismeeen groot traditionalisme, het grote traditionalisme