intricate
https://gyazo.com/93ad8d38039f571476d37c5b84741103
COMPLEX suggests the unavoidable result of a necessary combining and does not imply a fault or failure. e.g. a complex recipe
COMPLICATED applies to what offers great difficulty in understanding, solving, or explaining. e.g. complicated legal procedures
e.g. an intricate web of deceit
INVOLVED implies extreme complication and often disorder. e.g. a rambling, involved explanation
KNOTTY suggests complication and entanglement that make solution or understanding improbable. e.g. knotty ethical questions
adjective
〈模様・形などが〉込み入った, 入り組んだ, 複雑な; 〈話・構造などが〉難解な
e.g. an intricate network of canals.
ORIGIN