-itate

From Latin -itāt-, past participial stem of -itō. On the model of e.g. Classical Latin nōbilitō and found in borrowings e.g. premeditate, debilitate, agitate.^[1]

-itate

1. (very rare) Forming verbs, typically implying intense or repetitive activity.
   • 1635, Luke Foxe, “The Probability”, in Luke Foxe, Thomas James, edited by Miller Christy, The Voyages of Captain Luke Foxe of Hull, and Captain Thomas James of Bristol, in Search of a North-West Passage, in 1631-32; […], volume II, London: […] Hakluyt Society, […], published 1894, →OCLC, pages 427–428:

     [A]fter that the land doth trent Westward, as may be suspected by the want of ice, that the land, being farre remote to the North or West, the Sea doth keepe it selfe from frigitating by its continuall chafing and adjectating, as we see by the iles of Farre, Shetland, and Orkney, standing in and neere the same parallell with our frozen Fretum Hudson, where no Snow will lie for any time in Winter.

     A nonce word meaning “freezing”, formed from Latin frīgus (“cold”).^[2]

Borrowed from Latin -itās. Compare -tate from the same source.

• IPA^(key): [iˈta.te]

-itate

1. alternative form of -tate, giving a quality or characteristic of an adjective; -ity

Forms nouns from adjectives and sometimes other nouns. Examples include:

• fraternitate (“brotherhood, fraternity”)
• libertate (“liberty”)
• sexualitate (“sexuality”)

-itāte

1. ablative singular of -itās

• -tate, -ătate

Borrowed from Latin -itātem. This particular form of the suffix is used in neologisms, and based on French -ité. The inherited form -ătate is found in older words.

• IPA^(key): [iˈta.te]

-itate f (plural -ități)

1. -ity

Forms nouns from adjectives and sometimes other nouns. Examples include:

• fraternitate (“brotherhood, fraternity”)
• libertate (“liberty”)
• sexualitate (“sexuality”)