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Webster 1913 Edition

Adj.

[Pref

un-

+ Scot.

chancy

fortunate, safe.]

Happening at a bad time; unseasonable; inconvenient.

A. Trollope.

Ill-fated; unlucky.

[Prov. Eng. & Scot.]

Unsafe to meddle with; dangerous.

[Scot.]

unchancy ‎(comparative more unchancy, superlative most unchancy)

(chiefly Scotland) Unfortunate, unlucky.
(chiefly Scotland) Dangerous, unsafe.
- 1932, Lewis Grassic Gibbon, Sunset Song:
  the Kinraddies sat them quiet and decent and peaceable in their castle, and heeded never a fig the arguings of folk, for wars were unchancy things.