igitur

• Some say it to be some form of agitur enclitically weakened.
• Some refer it to i-, a pronominal stem of is (“it”; “he”, “she”; “this”, “that”) + the suffix -ha, -dha (compare the Ancient Greek -θα (-tha) and the Sanskrit इह (iha, “here”)) + -tur, an alternative form of -tus (compare Sanskrit तस् (tas)), as in penitus, antīquitus, etc.

• (Classical) IPA^(key): /ˈi.ɡi.tur/, [ˈɪɡɪt̪ʊr]
• (Ecclesiastical) IPA^(key): /ˈi.d͡ʒi.tur/, [ˈiːd͡ʒit̪ur]

igitur

1. (postpositive) therefore, then consequently
   • c. 200 BCE – 190 BCE, Plautus, Captivi :

     Eho dīc mihi, quis illic igitur est?

     Hey? Tell me, who is he then?

• While it is a postpositive conjunction, it is attested in the Vulgate to start a sentence.

1. • 405 CE, Jerome, Vulgate Genesis 2:1:

     Igitur perfectī sunt caelī et terra et omnis ōrnātus eōrum

• proinde

• “igitur”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• “igitur”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• igitur in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette