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Webster 1913 Edition

Noun.

The quality of being coy; feigned o[GREEK] bashful unwillingness to become familiar; reserve.

Syn. – Reserve; shrinking; shyness; backwardness; modesty; bashfulness.

Noun.

Reserve; unwillingness to become familiar; disposition to avoid free intercourse, by silence or retirement.

When the kind nymph would coyness feign, and hides but to be found again.

coyness ‎(usually uncountable, plural coynesses)