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Webster 1913 Edition

Noun.

The quality or state of being unsettled.

, n.

The state of being unfixed, unsettled or undetermined.

Irresolution; fluctuation of mind or opinions.

Uncertainty.

Want of fixedness; fluctuation.

unsettledness ‎(countable and uncountable, plural unsettlednesses)

The quality of being unsettled.
- 1988, January 8, “James Krohe Jr.”, in Reading: Last Among First Ladies:
  Its unsettledness and the extremes of its social style paralleled Mary's personality.