uninfinitenessn.
Etymology: Previous versions of the OED give the stress as: unˈinfiniteness.
the world > relative properties > number > plurality > fewness > [noun]
1656 tr. T. White 230 Science..is only restrain'd by uninfinitenesse of the number of the objects.
This entry has not yet been fully updated (first published 1924; most recently modified version published online June 2019).