have butterflies in one's stomach
Definition from Wiktionary, the free dictionary
- To experience a certain "fluttery" physical sensation in the abdomen, associated with nervousness, uncertainty, or anxiety. Often associated with love.
- Kevin had butterflies in his stomach every time he saw Chrissy.
- (idiomatic) To be nervous, uncertain, or anxious.
- He had butterflies in his stomach the morning of his wedding.