- Confidence
- Uncertain
- First attested
- Plautus
Pronunciation
Forms
rārus (feminine rāra, neuter rārum, comparative rārior, superlative rārissimus or rārissumus, adverb rārō or rārē or rārenter or rāriter); first/second-declension adjective[1]
Etymology
The origin is uncertain.[2][1] It has been connected with Proto-Indo-European *h₂erH- (“to disappear”) and with Ancient Greek ἐρῆμος (erêmos, “lonely”), but Schrijver rejects all the proposals, and de Vaan finds none of them obvious.[2][1] The TLL takes it from the root of reor “to count”, as “counted” and so “few”.[3]
Wiktionary compares Lithuanian irti (“to dissolve”).[1]
Earliest recorded meaning
It is found from Plautus onwards,[2][4] who says that a lover who comes only on occasional nights is forgotten.[5]
Semantic evolution
It was the opposite of dēnsus: of loose texture, porous, thin, as Lucretius' bodies with gaps between their parts and Virgil's wide-meshed nets.[5][6] It meant spaced thinly, sparse, as Nepos' scattered trees, and spaced in time, infrequent.[5]
From this it came to mean rare, uncommon, as Cicero's “nothing is rarer than a perfect orator”, and of exquisite quality.[5] English rare came from it, partly through Old French, in the late 14th century, first meaning “thin, porous”.[7]
Timeline
- c. 250–184 BC – Plautus uses it of infrequent nights.[5][4]
- 96–55 BC – Lucretius uses it of loose structure.[5][4]
- 81–43 BC – Cicero uses it in the sense “rare”.[5][4]
- late 14th century – English rare is recorded in the sense “thin, porous”.[7]
Meanings
Adjective
- Of loose structure, porous, thin.[5][1]
- Thinly spaced, sparse, scattered.[5][1]
- Infrequent, occasional.[5][1]
- Uncommon, rare, scarce.[5][1]
- Exquisite; unusual.[5]
Word family
- disrārō
- perrārus
- rārēfaciō
- rārēfīō
- rārescō
- rāripilus
- rāritās
- rāritūdō
- rāllus
- rārē
- rārenter
- rāriter
Related words
- English rare
References
- ^ a b c d e f g h i j Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
- ^ Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
- ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ a b c d e f g h i j k l Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
- ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Descendants
- English rare
Cite this entry
“Rarus.” Etymologically, 15 Oct. 2026, etymologically.com/la/rarus. Accessed 15 Oct. 2026.
Last edited on . ·