Serios (en. Serious)

/seˈɾjos/

Slang Meanings

Someone who is very strict.
Don’t expect jokes from him; he is very serious.
No esperes chistes de él, es muy serio.
An expression to indicate that something is not a joke.
I’m telling you seriously, don’t take it lightly.
Te lo digo serio, no me lo tomes a la ligera.