the GNU version of the Collaborative International Dictionary of English
adj. Not susceptible of pain or suffering; apathetic; impassible; unmoved.
The Century Dictionary and Cyclopedia
Not susceptible of pain or suffering; insensible; impassible.
Not showing sensibility or emotion; unmoved; apathetic: as, an impassive manner.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. having or revealing little emotion or sensibility; not easily aroused or excited
adj. deliberately impassive in manner
Word Usage
""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"