Definition of "demonstrativeness" [de•mon•stra•tive•ness]

• The state or quality of being demonstrative. (noun)

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• "We're just supposed to get on being normal and not alarm people with too much demonstrativeness."
• "To say nothing of the effect that this newly discovered hyper-demonstrativeness has had on my mother."
• "It came to her now that in spite of all his enthusiasm and demonstrativeness in the first stages of this affair, possibly she was much more trivial in his estimation than she had seemed to herself."