IPA: /ˈkɒmplɪkəsi/
KK: /kɑmplɪkəsi/
A situation or condition that is difficult to understand or deal with because it has many parts or is very complex.
The complicacy of the project made it hard for the team to finish on time.
Complicacy is formed from "com-" (meaning together) and "plicare" (meaning to fold). The word refers to the state of being folded together or intertwined, indicating complexity or intricacy.
Think of things being 'folded together' ('com-' means together and 'plicare' means to fold) — that's why complicacy refers to something that is complex or intricate.