IPA: //ˌmʌltiˈjuːn//
KK: /mʌltiˈjunɪn/
Relating to or involving multiple unions, particularly in the context of labor or trade organizations.
The multiunion agreement allowed workers from different unions to collaborate on common goals.
Multiunion → It is formed from "multi-" (meaning many) and "union" (from Latin "unio", meaning unity or oneness). The word "multiunion" refers to the state of being united in many ways or forms.
Think of 'many' ('multi-') coming together in 'unity' ('union') — that's what multiunion means.
No commonly confused words.