فِي ٱللُّغَةِ ٱلْإِنْجْلِيزِيَّةِ:

vagarities

جَمْع آخَر للكلمة vagary.

Perhaps an American-specific pronunciation's back-spelling, but not found in real dictionaries.

Vagarity is listed on page 1894, column one of the unabridged Websters New Twentieth Century Dictionary of the English Language published 1957.