'aristocraticness' originates from English, specifically formed from the adjective 'aristocratic' plus the noun-forming suffix '-ness'. 'Aristocratic' itself ultimately comes from Greek elements where 'aristos' meant 'best' and 'kratos' meant 'power' or 'rule'.

'aristocratic' came into English via French 'aristocratique' and Late Latin/French terms derived from Greek 'aristokratia' ('aristos' + 'kratos'); the suffix '-ness' (Old English, of Germanic origin) was later attached to form 'aristocraticness', meaning 'the quality of being aristocratic'.

Initially related to the concept of 'rule by the best' (aristocracy); over time the root terms produced an adjective meaning 'of or relating to the aristocracy', and finally the compound 'aristocraticness' evolved to denote the abstract quality or manner of being aristocratic (including neutral and pejorative senses).