IPA: /ˈkɒmplɪkeɪtɪd/
KK: /ˈkɑmplɪˌkeɪtɪd/
Something that has many parts that are connected in a way that makes it hard to understand or deal with.
The instructions for assembling the furniture were so complicated that I needed help.
Comparative: more complicated
Superlative: most complicated
Complicated → It is formed from "com-" (meaning together) and "plicare" (meaning to fold). The word "complicated" describes something that is folded together in a way that makes it difficult to understand or deal with.
Think of things that are 'folded together' ('plicare') in a complex way, which is why they become complicated.