verb/de.kɔ.my.no.ta.ʁi.ze/
to centralize communities, making them (progressively or not) lose their distinct identities to merge into a bigger one; to decentralize competences from the European level to the state level; to transfer competences from the linguistic communities to the federal state
Synonyms: centraliser
dé- + communautaire + -iser. See notes below to understand the difference of meaning of the word between the EU and Belgium.