the GNU version of the Collaborative International Dictionary of English
adj. Full of unpropitious stellar influences; unpropitious; ill-boding.
adj. Attended with suffering or disaster; very unfortunate; calamitous; ill-fated; ending in utter failure or ruin
The Century Dictionary and Cyclopedia
Gloomy; dismal; threatening disaster.
Ruinous; unfortunate; calamitous; occasioning great distress or injury: as, the day was disastrous; the battle proved disastrous.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. (of events) having extremely unfortunate or dire consequences; bringing ruin
Word Usage
"While any outcome that puts Salmond and his chums into outright control of the parliament is deplored by many Scots, the word "disastrous" to describe Labour's performance is as unfair as it is inaccurate."