This is the 4184th most frequent French word.
dis
"Dis" means "say" or "tell" in English.
Here, 'dis' is used as an imperative form of the verb 'dire' (to say) to instruct someone to tell something.
Dis-moi ce que tu penses.
Tell me what you think.
In this sentence, 'dis' is the first person singular present tense form of 'dire', indicating the act of saying or stating something habitually.
Je dis toujours la vérité.
I always tell the truth.
Here, 'dis' again represents the first person singular present tense form used in interrogative form to inquire about what is being told.