Etymologically

Etymology and origin of the Latin word -ulus

Confidence
Established
Formation
Inherited
First attested
c. 250–184 BC Plautus
Inherited from
Proto-Italic *-elos
Ultimate origin
Proto-Indo-European *-elós

Pronunciation

  • Classical: [ʊ.ɫʊs][1]
  • Ecclesiastical: [u.lus][1]

Forms

-ulus (feminine -ula, neuter -ulum); first/second-declension suffix[1]

Etymology

The suffix is inherited from Proto-Italic *-elos, whence Faliscan -𐌄𐌋𐌏𐌔 (-elos), from Proto-Indo-European *-elós, thematized from *-lós.[1] Weiss sets out the same line of descent for the diminutive, through older -olus from /*-elos/.[2] The OLD treats it as an enlargement of -lus.[3] Fortson finds the suffix /*-lo-/ widely in diminutives in Italic, Germanic and Balto-Slavic, comparing porculus (“piglet”) with Old High German farhali and Lithuanian paršẽlis, and also on verbal roots making nouns.[4] Weiss holds that the two functions, deverbal agentive and denominal often diminutive, may both be inherited, while noting that Schuhmann argues the diminutive use should not be attributed to Proto-Indo-European.[2] It is cognate with Proto-Germanic *-ilaz and *-ulaz, the source of English -le.[1]

Earliest recorded meaning

Plautus, of about 250–184 BC,[5] already has both main uses: garrulus (“talkative”) and tremulus (“trembling”) from verbs, and fīliolus (“little son”) and servolus (“a young or worthless slave”) from nouns, these two with ⟨-olus⟩ kept after /i/ and /u/.[2]

Semantic evolution

As a diminutive it forms nouns such as calculus from calx, and adjectives such as Graeculus, usually disparaging.[3] On verbs it forms adjectives of repeated action, such as crēdulus and tremulus, and agent nouns such as figulus.[3][2] It also forms nouns for instruments, such as capulus and cingulus.[3] After bases of the third, fourth and fifth declensions the diminutive has the form -culus, probably from a piling up of /-k(o)-/ and /-lo-/,[2] which Meiser separates from the instrument suffix -c(u)lum.[6] English -ule continues the diminutive, as in capsule.[7]

Timeline

Meanings

Suffix

  1. Forms a diminutive of a noun, indicating small size or youth: calculus, fīliolus.[3][1][2]
  2. Forms a diminutive of an adjective, with weakened force: Graeculus.[3][1]
  3. Forms adjectives or agent nouns from verbs, denoting repeated action: crēdulus, tremulus, figulus.[3][1][2]
  4. Forms nouns for instruments: capulus, cingulus.[3]

Word family

  • English -ule
  • English -le

References

  1. ^ a b c d e f g h Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k Weiss, Michael (2020), Outline of the Historical and Comparative Grammar of Latin, 2nd ed., Ann Arbor: Beech Stave
  3. ^ a b c d e f g h i Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  4. ^ Fortson, Benjamin W., IV (2010), Indo-European Language and Culture: An Introduction, 2nd ed., Malden, MA / Oxford: Wiley-Blackwell
  5. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ Meiser, Gerhard (2010), Historische Laut- und Formenlehre der lateinischen Sprache, 3rd ed., Darmstadt: WBG
  7. ^ Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com

Related etymologies

  • ulna · also from Proto-Italic
  • furvus · also from Proto-Italic
  • lien · also from Proto-Italic
  • hornus · also from Proto-Italic
  • callum · also from Proto-Italic
  • porrum · also from Proto-Italic
  • lanius · also from Proto-Italic
  • merula · also from Proto-Italic
Cite this entry

“-ulus.” Etymologically, 6 Nov. 2026, etymologically.com/la/-ulus. Accessed 6 Nov. 2026.

Last edited on . ·