noun
anticolonialism
Political ideology opposing colonialism and advocating for the independence of colonized peoples.
彼は反植民主義の立場から、独立運動を支持した。
He supported the independence movement from an anticolonialist standpoint.
20世紀には、多くの国で反植民主義の思想が広まった。
In the 20th century, anticolonialist ideas spread in many countries.
Compound of 反 (anti-) + 植民主義 (colonialism). The exact historical coinage is uncertain, but the term follows standard Sino-Japanese word formation.