From Longman Dictionary of Contemporary Englishfixityfix‧i‧ty /ˈfɪksəti/ noun [uncountable] formal CHANGE/BECOME DIFFERENT#when something does not changefixity of fixity of purpose
Examples from the Corpus
fixity• Second, stability does not imply fixity or constancy.• This present position should not be accorded a psychological fixity, which is somehow removed from the fluidity of historical development.• It was believed that fixity of exchange rates was necessary for the consolidation and development of these achievements.• Does the fixity on a particular occasion set in as a purely mental act of knowledge?• The girl nearest to the car, noticing the fixity of his stare, responded with a discreet V sign.• The Werner Plan placed emphasis on the fixity of exchange rates and complete freedom of capital movements. 