the GNU version of the Collaborative International Dictionary of English
adj. Void of passion; without anger or emotion; not easily excited; calm.
The Century Dictionary and Cyclopedia
Void of passion; not easily excited to anger; of a calm temper.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. not passionate
adj. unmoved by feeling
Word Usage
"Lyric courtesy of Nobody can doubt the sincerity of his words, or his outrage at the murders, but the deep monotone he used rendered his word passionless and perfunctory."