You can check the meaning if this idiom here.
He didn't bat an eye when they told him he had lost the contract.
PS I deleted your post with the answer as it was so close to the poll that people would be able to see it before they had answered.
thanks for your replay
Is this the same as "He didn't blink when they told him ......."?He didn't bat an eye when they told him he had lost the contract.
No reaction at all- no visible signs of being affected.
He did not bat an eye/eyelid when he the court declared him guilty of an array of charges.
After a bit of searching I think I may assume that "He didn't bat an eye" is synonyme for "He didn't blink" but which one is most common?
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From The AND DictionaryDisplaying Items 1 through 1 Definitionsbat3
Idiom: not bat an eye (not bat an eyelid)
- batted, batting
1. To open and close (one's eyelids) very quickly, usually to attract sympathy or admiration.
- Example: batted her eyelashes coyly at him
Etymology: 17c as a variant of bate (used of a hawk) to flutter or flap (when on the leash).
- (originally US)
To show no surprise or emotion.
- Example: He didn't bat an eye when he heard the news