The quality or state of being flirtatious; the characteristic behavior or personality trait of acting romantically interested without serious intent.
From 'coquettish' plus '-ness,' a suffix that transforms adjectives into abstract nouns representing the quality of that adjective. This structure allows English to express entire personality types.
The word 'coquettishness' shows how English lets you turn behaviors into abstract qualities—you can talk about someone's 'coquettishness' as if it's a specific personality ingredient, which is useful for literature, psychology, and gossip about your acquaintances.
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