1. (adj)psychedelic producing distorted sensory perceptions and feelings or altered states of awareness or sometimes states resembling psychosis Antonyms: colourless, unagitated, nonpsychoactive, colorless
3. (adj)psychedelic (of a mental state) characterized by intense and distorted perceptions and hallucinations and feelings of euphoria or sometimes despair Antonyms: unagitated, colourless, nonpsychoactive, colorless