LATIN DICTIONARYLexicon Latīnum
adjectivefirst/second-declension adjective

illacessītus

illacessītus (feminine illacessīta, neuter illacessītum)
Classical[ɪl.la.kɛsˈsiː.tʊs]Ecclesiastical[il.la.t͡ʃesˈsiː.tus]

Meaning

  1. adjectiveunprovoked

Declension

singular
formmasculinefeminineneuter
nominativeillacessītusillacessītaillacessītum
genitiveillacessītīillacessītaeillacessītī
dativeillacessītōillacessītaeillacessītō
accusativeillacessītumillacessītamillacessītum
ablativeillacessītōillacessītāillacessītō
vocativeillacessīteillacessītaillacessītum
plural
formmasculinefeminineneuter
nominativeillacessītīillacessītaeillacessīta
genitiveillacessītōrumillacessītārumillacessītōrum
dativeillacessītīsillacessītīsillacessītīs
accusativeillacessītōsillacessītāsillacessīta
ablativeillacessītīsillacessītīsillacessītīs
vocativeillacessītīillacessītaeillacessīta

illăcessītus (inl-), a, um, adj. inlacessitus,
I. unprovoked, unattacked (postAug.): marcentem diu pacem illacessiti nutrierunt, Tac. G. 36; id. Agr. 20.

Quick answers

What does illacessītus mean in Latin?
illacessītus, a adjective, means “unprovoked”.
How do you pronounce illacessītus?
In classical Latin, [ɪl.la.kɛsˈsiː.tʊs]; in ecclesiastical (church) Latin, [il.la.t͡ʃesˈsiː.tus].