How do you say watch out in french?

Answer 1

You can just shout: Attention ! and in French it is followed with the preposition à (for in English): frenchspanishonline.com/magazine/watch-out-in-french/

Answer 2

watch out could be translated 'regarde !' (imperative mood), regarder or observer (infinitive), or 'fais attention' (in the sense of 'pay attention') in French.