1 adj A coy person is shy, or pretends to be shy, about love and sex.
She is modest without being coy...
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coyly adv ADV with v
She smiled coyly at Algie as he took her hand and raised it to his lips.
2 adj If someone is being coy, they are unwilling to talk about something that they feel guilty or embarrassed about.
usu v-link ADJ, oft ADJ about n
(=reticent)
Mr Alexander is not the slightest bit coy about his ambitions.
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coyly adv ADV with v
The administration coyly refused to put a firm figure on the war's costs.