infirmus

• īnfirmis (post-classical)

From in- (“not”) +‎ firmus (“strong, firm”), from Proto-Italic *en- from Proto-Indo-European *n̥- (“not”) + Proto-Italic *fermos from root Proto-Indo-European *dʰer- (“to hold, support”).

• (Classical Latin) IPA^(key): /inˈfir.mus/, [ĩːˈfɪrmʊs̠]
• (modern Italianate Ecclesiastical) IPA^(key): /inˈfir.mus/, [iɱˈfirmus]

īnfirmus (feminine īnfirma, neuter īnfirmum, comparative īnfirmior, superlative īnfirmissimus, adverb īnfirmiter); first/second-declension adjective

1. weak, feeble

   Synonyms: dēbilis, impotēns, invalidus, aeger, fessus, mollis, tenuis, frāctus, languidus, valētūdinārius

   Antonyms: constans, dūrus, firmus, fortis, potēns, valens, validus

2. unhealthy, infirm, indisposed, sick

   Synonyms: īnsānus, insalūbris, fessus, aeger, languidus, miser, valētūdinārius

   Antonyms: salvus, sānus, salūber, salūtāris, valēns, validus

3. inconclusive

First/second-declension adjective.

• īnfirmitās

• “infirmus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• “infirmus”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• infirmus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette, page 814.
• infirmus in Georges, Karl Ernst, Georges, Heinrich (1913–1918) Ausführliches lateinisch-deutsches Handwörterbuch, 8th edition, volume 2, Hahnsche Buchhandlung, column 243
• Walther von Wartburg (1928–2002) “ĭnfĭrmus”, in Französisches Etymologisches Wörterbuch, volume 4: G H I, page 670