Antonyms of adj mind-expanding

1 sense of mind-expanding

Sense 1
mind-expanding -- ((of hallucinogenic drugs) giving a sense of heightened or broader awareness)

INDIRECT (VIA psychoactive) -> nonpsychoactive -- (not affecting the mind or mental processes; "a nonpsychoactive pain reliever")

Similarity of adj mind-expanding

1 sense of mind-expanding

Sense 1
mind-expanding -- ((of hallucinogenic drugs) giving a sense of heightened or broader awareness)
       => psychoactive (vs. nonpsychoactive), psychotropic -- (affecting the mind or mood or other mental processes; "psychoactive drugs")