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Webster 1828 Edition

ppr.

Knitting the brow in anger or displeasure; expressing displeasure by a surly, stern or angry look; lowering; threatening.

frowning

frowning ‎(plural frownings)

The act of giving a frown.
- Isaac Watts
  Let all the creatures above and below frown and scowl upon me; if my Creator smile, I am happy; nor can all their frownings diminish my complete joy.