Definition of look out in English:

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look out

[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
More example sentences
  • I just hope they will take notice of warning signs we have put up and look out for them on the roads.
  • ‘Look out! Look out!’ they cried to their fellow crew members.
  • ‘Look out!’ I yelled, diving toward Scott.
Synonyms
beware, watch out, be on (one's) guard, be alert, be wary, be vigilant, be careful, take care, be cautious, pay attention, take heed, keep one's eyes open/peeled, keep an eye out;
watch your step
See parent entry: look
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