IPA: /ˌmʌl.tɪˈfɪl.ə.mənt/
KK: /mʌltɪˈfɪləmənt/
Describing something that consists of or is made up of several thin strands or fibers.
The fishing line is made of multifilament material, making it stronger and more flexible.
Multifilament → It is formed from "multi-" (from Latin "multus", meaning many) and "filament" (from Latin "filamentum", meaning thread or fiber). The word "multifilament" refers to something made of many threads or fibers.
Think of 'many' ('multi-') threads or fibers ('filament') coming together — that's what multifilament means.
No commonly confused words.