Webster's Revised Unabridged Dictionary · 1913

Unchancy

Unchancy , adjective

[Pref un- + Scot. chancy fortunate, safe.]

1.
Happening at a bad time; unseasonable; inconvenient. — A. Trollope
2.
Ill-fated; unlucky. [Provincial English & Scottish]
3.
Unsafe to meddle with; dangerous. [Scottish]