Definition of look out in English:

look out

phrasal verb

  • [usually in imperative] Be vigilant and take notice.

    ‘“Look out!” warned Billie, seeing a movement from the room beyond’
    ‘look out for the early warning signals’
    • ‘Look out for signs of disease.’
    • ‘‘Look out!’ I yelled, diving toward Scott.’
    • ‘I just hope they will take notice of warning signs we have put up and look out for them on the roads.’
    • ‘As she lived and worked in the rainforest of Ecuador, she had to look out for poisonous snakes, insects and plants.’
    • ‘‘Look out! Look out!’ they cried to their fellow crew members.’
    beware, watch out, be on guard, be on one's guard, be alert, be wary, be vigilant, be careful, be cautious, pay attention, take heed, heed, keep one's eyes open, keep one's eyes peeled, keep one's eyes skinned, keep an eye out, be on the qui vive
    View synonyms