complicated UK /ˈkɒm.plɪ.keɪ.tɪd/US /ˈkɑm.plɪˌkeɪ.tɪd/ adjective2 •not simple, and needing a lot of thought to follow or work outIt seems this complicated situation will not blow over soon. •Folded longitudinally (as in the wings of certain insects). formscomplicateder · more complicated · complicatedest · most complicated