Artificial intelligent assistant

grievousty

grievousty Obs.
  In 5 grevouste, -osetee.
  [f. grievous + -ty.]
  Grievousness, heinousness.

c 1410 Love Bonavent. Mirr. xxxiv. 68 (Gibbs MS.) Also to schewe þe greuouste of synn in custome. c 1425 Orolog. Sapient. ii. in Anglia X. 342/38 Þou schalt gretelye weye þe grevosetee of þine sinnes.

Oxford English Dictionary

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