IPA: /ˌmʌltiˈfæmɪli/
KK: /mʌltiˈfæmɪli/
Relating to or designed for multiple families to live in or use, such as a building that contains several separate living units.
The new apartment complex is a multifamily dwelling that can accommodate many residents.
Multifamily → It is formed from "multi-" (meaning many) and "family" (from Latin "familia", meaning household or family). The word "multifamily" refers to a type of housing that accommodates many families.
Think of 'many' ('multi-') households or 'families' living together — that's what multifamily means.
No commonly confused words.