This is the 3401st most frequent Spanish word.
di
"Di" is the informal imperative form of the verb "decir," meaning "say" or "tell."
In this sentence, "di" is the first-person singular form of the preterite tense of "dar" (to give), indicating a completed action of not attributing importance.
No di importancia a sus palabras, me concentré en mi trabajo.
I didn't give importance to his words; I focused on my work.
The word "di" is used here as the imperative form of the verb "decir" (to say or to tell) for the second person singular (tú). It is prompting someone to share their opinion.
Di tu opinión sobre este tema.
Give your opinion on this topic.
Here, "di" is part of the imperative phrase "dime" (tell me), where "me" is the indirect object pronoun, meaning the action of telling is directed to the speaker.