" indefectibility "

1: as in perfection, faultlessness;

•  Synonyms : 

•  faultlessness,

•  flawlessness,

•  perfection,

•  absoluteness,

•  completeness,

•  entireness,

•  entirety,

•  fullness,

•  perfectness,

•  wholeness,

•  all-inclusiveness,

•  comprehensiveness,

•  exhaustiveness,

•  extensiveness,

•  inclusiveness,

•  soundness,

•  thoroughness

•  Antonyms : 

•  imperfection,

•  imperfectness,

•  incompleteness,

•  unsoundness,

•  inadequacy,

•  inadequateness,

•  limitedness,

•  narrowness,

•  patchiness,

•  sketchiness

1: being entirely without fault or flaw;

  * e.g., " ... the indefectible logic of the polemist's arguments "

•  Synonyms : 

•  absolute,

•  faultless,

•  flawless,

•  ideal,

•  immaculate,

•  impeccable,

•  irreproachable,

•  letter-perfect,

•  perfect,

•  picture-book,

•  picture-perfect,

•  seamless,

•  unblemished

•  Antonyms : 

•  amiss,

•  bad,

•  censurable,

•  defective,

•  faulty,

•  flawed,

•  imperfect,

•  reproachable