IPA: //ʌnˈwʌntɪdnəs//
KK: /ʌnˈwoʊntɪdnəs/
The condition of being unusual or not commonly seen; something that is rare or different from what is normal.
The unwontedness of the event surprised everyone in the town.
Unwontedness → It is formed from "un-" (meaning not) and "wonted" (from Old English "wont", meaning accustomed or used to) and the suffix "-ness" (meaning the state or quality of). The word "unwontedness" refers to the state of being not accustomed or unusual.
Think of 'not' ('un-') being combined with 'accustomed' ('wonted') to remember that 'unwontedness' means the quality of being unusual or not familiar.