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infirm
adjective
- not firm or strong physically; weak; feeble, as from old age
- not firm in mind or purpose; not resolute; vacillating
- not stable, firm, or sound; frail; shaky, as a structure
- not secure or valid: an infirm title to property
Related Forms:
- infirmly adverb
- infirmness noun
See infirm in American Heritage Dictionary 4
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