This is the 7th most frequent Hindi word.
कह
"कह" means "say" or "speak" in English.
In this sentence, 'कहो' (kaho) means 'tell,' as a polite imperative form to ask someone to retell.
मुझे वह कहानी फिर से कहो।
Tell me that story again.
Here, 'कह' (keh) forms the word 'कह रहे हो,' meaning 'are telling' in present continuous tense.
क्या तुम सच कह रहे हो?
Are you telling the truth?
In this sentence, 'कहते' (kahte) is used to mean 'say,' referring to the general opinion or statement by people.