infirm Hear it!

infirm definition

in·firm (in fʉrm)

adjective

  1. not firm or strong physically; weak; feeble, as from old age
  2. not firm in mind or purpose; not resolute; vacillating
  3. not stable, firm, or sound; frail; shaky, as a structure
  4. not secure or valid an infirm title to property

Etymology: ME < L infirmus

Related Forms:

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