English → Latin
“invalid” in Latin
morbōsusdiseased, sick, illvalētūdināriussickly, weak, infirmnautasailor, seaman, marinermancusmaimed, crippled, handicapped, infirm; defective, imperfectirritusinvalid, void, null and void; ineffective, useless, irrelevantvānusvain, empty, vacant, void; unsubstantial; groundless, baseless, meaningless, pointless, worthless, ineffectual, mindlessrefīgōto loosen, unfasten, unfix; to cancel, revoke, abolish (a law, etc.)lēxthe legal machinery of a state, the law; a law, statute, bill; the laws regarded as a body, the constitution
The English word invalid itself goes back to Latin valeō, through invalidus.
Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864
invalid s.
morbosus: valetudinarius: ad aegrotandum proclivis (general term, of persons often attacked by sickness; on the last, ☞ Cic., Tusc., 4, 12, 47 and 28). To be a great invalid, valetudine minus prosperā uti; semper infirma, atque etiam aegra valetudine esse. [Vid. SICK, SICKLY.]
A disabled soldier or sailor, ad munera corporis senecta debilis: annis et senecta debilis: mancus (cladus) ac debilis: ad arma inutilis, all with miles or nauta (as the case may be). A hospital of invalids, domus, in qua milites (nautae) manci ac debiles aluntur.
invalid adj.
irrītus (not being good in law; opposed to ratus; e.g., a will): vanus (vain, null, without effect; of things). (The words are found in this connection and order.) irrītus et vanus (e.g., a will): parum idoneus (not fit or good enough for the purpose; e.g., bail, witness, excuse). To render anything invalid, aliquid irritum facere (e.g., a will): aliquid rescindere et irritum facere (to annul, to cancel; e.g., a testament, an agreement; also to quash an indictment). (The words are found in this connection and order.) rescindere et irritum facere; or ut irritum et vanum rescindere (a will): refigere (PROP.; to pull down what has been posted up; hence to cancel, inasmuch as the public notice is taken down again; e.g., a law, legem). To declare anything invalid, aliquid tollere et irritum esse jubere: to consider anything invalid, aliquid pro irrito habere. An invalid will, irritum or inutile testamentum.
Quick answer
- What is the Latin word for invalid?
- The usual Latin words for “invalid” are morbōsus, valētūdinārius, nauta; also mancus, irritus, vānus. The right choice depends on the sense; see the distinctions below.
Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.