Etymology and origin of the Latin word sub-
- Confidence
- Established
- Formation
- Inherited
- Inherited from
- Proto-Italic *supo
- Ultimate origin
- Proto-Indo-European *upó
Forms
sub-[1] The b is often assimilated before c, f, g, m, p, r (succēdō, sufficiō, suggerō, summoveō, supplicō, surgō); it usually drops before sc and sp (suspiciō), and before t the form is usually sus- (for subs-), also in suscipiō and suscitō.[2][3]
Etymology
It is the preposition sub (“under”) used as a prefix,[2][1] inherited from Proto-Italic *supo (“down, below; upwards”),[3] from Proto-Indo-European *upó (“under, from below”).[3][1] The ⟨s-⟩, which Italic shares with Greek, is not explained.[3]
Cognate with Umbrian sub- as a verbal prefix, Ancient Greek ὑπό (hupó, “under”), Sanskrit उप (úpa, “towards, under”) and Old Irish fo (“under”).[3]
Semantic evolution
Added to verbs it gives the senses of the preposition: position under something, movement down or under, movement up from below, and position or movement close to something; it also marks substitution.[2] Before verbs and adjectives it weakens the meaning (“somewhat, slightly”), and before nouns it marks a lower rank.[2][1] In transferred senses it can mean “secretly” or “in a bad sense, falsely”.[1]
Meanings
Prefix
- Under, underneath (substruō, sublinō).[2][1]
- Down, downwards, to a place under (sublābor).[2][1]
- Up from below, upwards (subdūcō, sublevō).[2][3]
- Close to, next, after (subiungō, subsequor).[2]
- In place of another, of substitution (sufficiō).[2][1]
- Secretly, stealthily; falsely.[1]
- With adjectives and verbs: somewhat, slightly (subniger, subdubitō).[2][1]
- With nouns: subordinate, of lower rank (succenturiō).[2]
Word family
Related words
References
- ^ a b c d e f g h i j Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e f g h i j k Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ a b c d e f de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
Derived terms
- subduco
- subeo
- subiaceo
- subigo
- subiugius
- subiungo
- sublabor
- sublego
- submoveo
- subnecto
- subnixus
- suborior
- suborno
- subrideo
- subrigo
- subruo
- subscribo
- subseco
- subsido
- subsigno
- subsilio
- substerno
- substo
- substringo
- subsum
- subtemen
- subtexo
- suburbanus
- subveho
- subvenio
- subverto
- subvolvo
- succenseo
- succingo
- succumbo
- succurro
- suffero
- suffigo
- sufflo
- suffodio
- suffulcio
- suffundo
- suggredior
- summergo
- sumministro
- suppeto
- supporto
- supprimo
- surgo
- surrepo
- surripio
- sursum
- suscenseo
- suscipio
- suscito
- suspicio
Descendants
Related etymologies
Cite this entry
“Sub-.” Etymologically, 23 Oct. 2026, etymologically.com/la/sub-. Accessed 23 Oct. 2026.
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