the GNU version of the Collaborative International Dictionary of English
adj. Fitted to gall or chafe; vexing; harassing; irritating.
The Century Dictionary and Cyclopedia
Such as to gall, irritate, or distress; extremely annoying; harrowing; provoking.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. causing irritation or annoyance
Word Usage
"I take that back, the thing that's MOST galling is that he's going to continue to allow American troops to DIE NEEDLESSLY while he dithers about looking smart and thoughtful."