psychedelic

/ˌsɑɪ·kɪˈdel·ɪk/ adj

Definition

› causing unusually strong experiences of color, sound, smell, taste, and touch, and other mental effects such as feelings of deep understanding or hallucination (= imagining things that do not exist) › Psychedelic also means likely to produce a strong effect because of having bright colors or patterns.

(Definition of psychedelic adj from the Cambridge Academic Content Dictionary © Cambridge University Press)