(of a mental state) characterized by intense and distorted perceptions and hallucinations and feelings of euphoria or sometimes despair; "a psychedelic experience"
having the vivid colors and bizarre patterns associated with psychedelic states; "a psychedelic painting"
producing distorted sensory perceptions and feelings or altered states of awareness or sometimes states resembling psychosis; "psychedelic drugs like psilocybin and mescaline"
under or below an object or a surface; at a lower place or level; directly beneath; "we could see the original painting underneath"; "a house with a good foundation underneath"
on the lower or downward side; on the underside of; "a chest of drawers all scratched underneath"
a statement acknowledging something or someone; "she must have seen him but she gave no sign of acknowledgment"; "the preface contained an acknowledgment of those who had helped her"