Definitions for: Unfirm

[adj] not firmly or solidly positioned; "climbing carefully up the unsteady ladder"; "an unfirm stance"
[adj] (of soil) unstable; "shifting sands"; "unfirm earth"

Webster (1913) Definition: Un*firm", a.
Infirm. [R.] --Dryden.

Synonyms: loose, shifting, unfixed, unsteady