have butterflies in your stomach
have butterflies in (one's) stomach
To have a feeling of nervousness, often before a performance or undertaking of some kind. I almost didn't go on stage and perform tonight because I had butterflies in my stomach.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
have butterflies in your stomachhave a queasy feeling because you are nervous. informal
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