Adjective unfirm has 2 senses
- unfirm, unsteady - not firmly or solidly positioned; "climbing carefully up the unsteady ladder"; "an unfirm stance"
Antonym: fixed (indirect, via unfixed)
- shifting, unfirm - (of soil) unstable; "shifting sands"; "unfirm earth"
Antonym: compact (indirect, via loose)
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