No. 4,368 in Spanish

sé

"Sé" means "I know" (from the verb "saber") or "Be" (informal command from the verb "ser").

In a sentence

Yo sé que hoy será un gran día.
I know that today will be a great day.
In this sentence, 'sé' is the first person singular conjugation of the verb 'saber', meaning 'to know', indicating knowledge of something.
Sé amable con los demás.
Be kind to others.
Here, 'sé' is the imperative form of the verb 'ser', meaning 'to be', used to give an affirmative command.
Aunque no sé la respuesta, intentaré ayudar.
Even though I don't know the answer, I will try to help.
Again, 'sé' is used as the verb 'saber' in first person singular, indicating lack of knowledge of the answer.

Hear it in real podcasts

The recording above is a synthetic voice. Hear how people say “sé” in actual Spanish podcasts.

Learn it from shows you like

LangTurbo plays Spanish podcasts with a transcript and the English under every line. Tap a word like this one and it tells you what it means right there.

Get the app

Spanish books and courses on Amazon (an affiliate link: a purchase through it supports this site).