Characterized by fluttering or trembling movements; nervous, anxious, or easily agitated; inclined to flutter.
From flutter (Old English flotorian) + -y (adjectival suffix). The -y suffix has been used to create adjectives from nouns and verbs since Old English times.
A fluttery feeling is so universal that nearly every language has a word for it—it's one of those rare emotions that transcends culture because we all experience that nervous excitement.
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