Disastrous

Part of speech: adjective (a.)

1. Full of unpropitious stellar influences; unpropitious; ill-boding. [Obs.] The moon In dim eclipse, disastrous twilight sheds. Milton.

2. Attended with suffering or disaster; very unfortunate; calamitous; ill-fated; as, a disastrous day; a disastrous termination of an undertaking. Wherein I spake of most disastrous chances. Shak. -- Dis*as"trous*ly, adv. -- Dis*as"trous*ness, n.