rat on (someone) - to report someone's bad behavior to someone (किसी के बुरे व्यवहार की शिकायत करना)
rat out on (someone) - to desert or betray someone (धोखा देना)
rat race - a rushed and confusing way of living that does not seem to have a purpose (जीने का एक भ्रमित करने वाला तरीका जिसका कोई उद्देश्य नहीं लगता)
smell a rat - to be suspicious of someone or something, to feel that something is wrong (किसी चीज़ और वस्तु पर संदेह करना)