FromLatinipse.

ipse

1. himself;herself;itself

• ipsus(Old Latin)

FromProto-Italic*e(s)peso, a compound pronoun whose-p- is of difficult-to-trace origin. See the Proto-Italic entry for more.

Thep is traditionally explained as as follows. In Old Latin when both parts were inflected, an epenthetic consonantp was inserted in the form*eum-sum, yieldingeum-p-sum. From these accusative forms the stems-pso and-psā were extracted and adapted to the nominative forms, thusipsus andeapsa. Ultimately the paradigm was assimilated to that ofiste,ille, with only later in the history of Latin neuteripsum becomingipsud.^[1]

De Vaan argues that the-p- need not necessarily be epenthetic, but instead it may be the particle-pe.

• (Classical Latin)IPA^(key):/ˈip.se/,[ˈɪps̠ɛ]
• (modern Italianate Ecclesiastical)IPA^(key):/ˈip.se/,[ˈipse]
• Hyphenation:ip‧se

ipse (feminineipsa,neuteripsum);demonstrative pronoun (pronominal)

1. (emphatic)himself,herself,itself, thevery, theactual
   • 8CE,Ovid,Fasti5.6:

     cōpiaqueipsa nocet

     andthe very abundance [of choices] hurts

2. specific reference to thechief, theleader, theone, etc., used to distinguish the principal person from the subordinates
   • 29BCE – 19BCE,Virgil,Aeneid1.113–115:

     Ūnam, quae Lyciōs fīdumque vehēbat Orontēn,
     ipsius ante oculōs, ingēns ā vertice pontus
     in puppim ferit [...].

     One [ship], which was carrying the faithful Orontes and [his] Lycians – [and it happened] before the eyesof [Aeneas] himself – a huge wave [descending] from high above smashes upon [its] stern [...].
     (See:Aeneas;Lycia,Lycians.)

3. inperson
4. forone's part, forhis part, forher part
5. alone, byoneself, by one'sownaccord, of one's ownnature
   • 29BCE – 19BCE,Virgil,Aeneid4.475–476:

     [...] tempussēcum ipsa modumque / exigit, [...].

     [..., and]all by herself [Dido] works out the time and manner [of her own death], [...].
     (Literally, “with she herself;” in other words, Dido tells no one about her suicidal thoughts.)

6. just(with anadverb of time)

   nuncipsum ―just now; at thisvery time

   tumipsum ―just now; at thatvery time

7. exactly,precisely,just(with anumeral or forcontrast)

Demonstrative pronoun (pronominal).

It follows the pronominal declension

• In Medieval Latin the neuter formipsud (instead ofipsum) appears.

• “ipse”, inCharlton T. Lewis and Charles Short (1879)A Latin Dictionary, Oxford: Clarendon Press
• ipse inGaffiot, Félix (1934)Dictionnaire illustré latin-français, Hachette.
• Carl Meißner, Henry William Auden (1894)Latin Phrase-Book‎^[1], London:Macmillan and Co.
  • to penetrate into the heart of Greece:in ipsam orintimam Graeciam penetrare
    
  • (ambiguous) at the same moment that, precisely when:eo ipso tempore, cum; tum ipsum, cum
    
  • just at the critical moment:in ipso discrimine (articulo) temporis
    
  • extraneous causes:causae extrinsecus allatae (opp.in ipsa re positae)
    
  • at the critical moment:in ipso periculi discrimine
    
  • everyday experience tells us this:res ipsa, usus rerum (cotidie) docet
    
  • the very facts of the case show this:res ipsa docet
    
  • the matter speaks for itself:res ipsa (pro me apud te) loquitur
    
  • there is a flavour of Atticism about his discourse:ex illius orationibus ipsae Athenae redolent
    
  • this is as clear as daylight:hoc est luce (sole ipso) clarius
    
  • (ambiguous) at the same moment that, precisely when:eo ipso tempore, cum; tum ipsum, cum
    
  • (ambiguous) with this very object:ad id ipsum
    
  • (ambiguous) the circumstances are described in language worthy of them:rebus ipsis par est oratio
    
  • (ambiguous) to have self-control; to restrain oneself, master one's inclinations:sibi imperare orcontinere et coercere se ipsum
    
• ipse inRamminger, Johann (2016 July 16 (last accessed))Neulateinische Wortliste: Ein Wörterbuch des Lateinischen von Petrarca bis 1700‎^[2], pre-publication website, 2005-2016