The quality or degree of attractive power or influence.(noun)
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Use "attractivity" in a sentence
"We could try out some measures to increase the attractivity of having children:"
"This includes a judgement of the social communication skills and general attractivity of their personalities."
""By Jove!" the exclamation had been Captain Barlow's; and Elizabeth, with the devilish premonition of an acute woman knew that it was a masculine's involuntary tribute to feminine attractivity."