spaced out speIst adj slang (of a person) not completely aware of what is happening around you, esp. as a result of taking drugs; HIGH (尤指因吸食毒品后)昏昏沉沉的，毒品引起的快感 She was usually spaced out on drugs. 她经常沉迷于毒品之中。 He looks totally spaced out. 他似乎沉迷在毒品的快感之中。