Definition of not bat an eyelid in English:

not bat an eyelid

(also without batting an eyelid)

phrase

British
informal
  • Show (or showing) no surprise or concern.

    ‘she fell down and grazed her knees, but she didn't bat an eyelid’
    • ‘MacGyver, err… our driver, didn't bat an eye despite our extensive arm waving.’
    • ‘Petrified, she sat still, not so much as batting an eyelash.’
    • ‘Michael didn't bat an eyelid, but poured her another one, then led her into the spacious dining room to dance.’
    • ‘The compassionate doctor didn't bat an eyelid at the scene in front of her.’
    • ‘‘I like to read the dictionary every day,’ he says without batting an eyelash.’
    • ‘When he told me what he'd done, I didn't bat an eye.’
    • ‘Paul didn't bat an eyelid - neither did I, I was too busy staring in horror at the receipt. $1890 on food!’
    • ‘Yet my husband, who I reckon has more than doubled in size since we met, doesn't bat an eyelid.’
    • ‘Even when a roar of pain resounded from the back room, she didn't bat an eye.’
    • ‘A colleague actually asked Skip that question and he didn't bat an eye.’
    • ‘When I say they didn't bat an eyelid, I'm not exaggerating because I was looking at them.’
    • ‘But to my surprise, the kids didn't bat an eyelid.’
    • ‘The counselor said and she repeated that question over and over but Kate didn't bat an eye nor did she speak a word.’
    • ‘We sang Christmas and Hannakuh songs in the winter concert and nobody batted an eyelash.’
    • ‘In fact the only person who doesn't bat an eyelid when he belts out his songs in the living room is their six-month-old daughter, Evie.’
    • ‘She didn't bat an eye; she just kept chatting, telling him where she lived and walking him all the way to the subway.’
    • ‘Since I write reviews for a living, I didn't bat an eye.’
    • ‘He closed his hand around it, not even batting an eyelash.’
    • ‘He could get a vice president's position at just about any company in town without batting an eyelash.’
    • ‘It was a process that took place in the modern world and no one batted an eyelash.’