Princeton's WordNet

1. watch, look out, watch out(verb)

   be vigilant, be on the lookout or be careful

   "Watch out for pickpockets!"

Kernerman English Learner's Dictionary

1. watch out(verb)ɒtʃ

   used to warn sb about immediate danger

   Watch out! There's a car!

Wiktionary

1. watch out(Verb)

   To be aware or conscious; to look closely or carefully; to use caution. Often used in the imperative.

• kyk uit, oppasAfrikaans
• إحْتَرِس! إنْتَبِه!Arabic
• внимавамBulgarian
• ter cuidadoPortuguese (BR)
• dávat pozorCzech
• aufpassenGerman
• passe påDanish
• προσέχω, φυλάγομαιGreek
• tener cuidado, vigilarSpanish
• ettevaatlik olema, ettevaatust!Estonian
• مواظب بودنFarsi
• varoaFinnish
• faire attention (à)French
• לְהִיזָהֵרHebrew
• सतर्क रहनाHindi
• pazitiCroatian
• vigyázHungarian
• berhati-hatiIndonesian
• gæta sín (á)Icelandic
• (fare attenzione a)Italian
• 気をつけるJapanese
• 조심하다Korean
• saugotisLithuanian
• Uzmanies!; Piesargies!Latvian
• tengok-tengok, berjaga-jagaMalay
• oppassenDutch
• passe på, være forsiktigNorwegian
• uważaćPolish
• ter cuidadoPortuguese
• a fi atent (la)Romanian
• остерегатьсяRussian
• dávať pozorSlovak
• pazitiSlovenian
• pazitiSerbian
• se upp [för]Swedish
• ระวังThai
• dikkat etmek, dikkatli olmakTurkish
• 留心Chinese (Trad.)
• остерігатисяUkrainian
• محتاط رہوUrdu
• chú ýVietnamese
• 戒备Chinese (Simp.)