not bat an eye/eyelash
phrase
US, informal
: to show no surprise, fear, concern, etc.
He thought the news would make her upset, but she never batted an eye.
He listened without batting an eyelash.
Cite this Entry
“Not bat an eye/eyelash.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/not%20bat%20an%20eye%2Feyelash. Accessed 6 Mar. 2026.
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Merriam-Webster unabridged
