Archaic Incapable of physical sensation.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "impassive" in a sentence
""To visitation of the impassive air," is a sonorous verse; but it is not Dante's verse, unless _all detached_ means _on every side is open to visitation_, and _impassive air_ means"
"Ella avoided looking at him and kept her expression impassive as she served the dewberry cobbler and cream."
"Choudhury forced herself to keep her expression impassive and nonthreatening."