" quiddity "

1: an odd or peculiar habit;

  * e.g., " ... for all of her quiddities, she is a very wise and generous lady "

•  Synonyms : 

•  crotchet,

•  curiosity,

•  eccentricity,

•  erraticism,

•  idiosyncrasy,

•  individualism,

•  kink,

•  mannerism,

•  oddity,

•  peculiarity,

•  quip,

•  quirk,

•  singularity,

•  tic,

•  trick,

•  twist

•  Antonyms : 

• (N/A)

2: the quality or qualities that make a thing what it is;

  * e.g., " ... Rembrandt's genius was his unparalleled ability to render a person's quiddity in a single portrait "

•  Synonyms : 

•  being,

•  essence,

•  essentiality,

•  nature,

•  quintessence,

•  soul,

•  stuff,

•  substance

•  Antonyms : 

• (N/A)