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Webster 1913 Edition

Noun.

The state of being seared or callous; insensibility.

Bp. Hall.

Noun.

The state of being seared, cauterized or hardened; hardness; hence insensibility.

searedness ‎(uncountable)

The state of being seared or callous; insensibility.
- Bishop Joseph Hall
  He wonders at my extreme prodigality of credit, and searedness of conscience, in citing an epistle so convicted by Bellarmine!