adverb

  • 1Extending or directly below something.

    ‘weaving the body through the crossbars, over and under, over and under’
    • ‘Nothing was happening until a chipmunk poked his head through the flowers, looked at me, and dove back under.’
    • ‘The girls pretended to have lost a ring under the table, so he crawled under and looked for it.’
    • ‘She used a medium-barrel curling iron to turn the hair under and over before finger-styling it.’
    down, downward, lower, below, underneath, beneath
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  • 2Under water.

    ‘he was floating for some time but suddenly went under’
    • ‘But the boat was sinking fast and when the stern went under, a rush of air pushed four people out of the cabin.’
    • ‘When I heard the splash I turned round and saw the boy was struggling and going under.’
    • ‘I'm slinking along the bottom like an eel, trying to see how long I can stay under before I need to surface.’
    • ‘Many of the troops died in deliberately-flooded fields, dragged under by their equipment.’
    down, downward, lower, below, underneath, beneath
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    1. 2.1 Affected by an anaesthetic; unconscious.
      ‘the operation was quick; she was only under for 15 minutes’
      • ‘When I came to, it turned out that I had been under for a whole hour.’