The Collaborative International Dictionary
Materialistical
Materialistic \Ma*te`ri*al*is"tic\, Materialistical \Ma*te`ri*al*is"tic*al\, a. Of or pertaining to materialism or materialists; of the nature of materialism.
But to me his very spiritualism seemed more
materialistic than his physics.
--C. Kingsley.
2. Primarily concerned with material objects and worldly activities, as contrasted with spiritual, moral or philosophical concerns; especially, concerned primarily with gaining money and the things that money can buy.
Wiktionary
materialistical
a. (alternative form of materialistic English)