also: うんめいろんしゃ
A person who believes that all events are predetermined and inevitable. Often used in philosophical or religious contexts.
He is a fatalist, so he thinks effort is futile.
In the thinking of a fatalist, the future cannot be changed.
宿命論者 also means 'fatalist', but 宿命 emphasizes an inescapable destiny often with a negative connotation, while 運命 is a more neutral term for fate.
決定論者 is a 'determinist', a broader philosophical stance that all events are caused by prior events, not necessarily implying a predetermined fate.
Standard kanji spelling. The reading うんめいろんじゃ is more common than うんめいろんしゃ.
Alternate reading; less common but still used.
Compound of 運命 (fate) + 論 (theory, argument) + 者 (person). The reading じゃ is the standard on'yomi for 者 in such compounds.