Dis‐as″trous (?), a. [Cf. F. désastreux. See Disaster.] 1. Full of unpropitious stellar influences; unpropitious; ill-boding.
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.