1
  Producing distorted sensory perceptions and feelings or altered
  states of awareness or sometimes states resembling psychosis.   ADJ
  psychedelic drugs like psilocybin and mescaline

2
  Having the vivid colors and bizarre patterns associated with psychedelic
  states.    ADJ
  a psychedelic painting

3
  Of a mental state characterized by intense and distorted perceptions
  and hallucinations and feelings of euphoria or sometimes despair.    ADJ
  a psychedelic experience