Basically, an introvert is a person who is reserved, quiet, and solitary
"Reservado" in Spanish can mean "reserved" or "quiet." It can refer to a reserved or quiet person, or be used to indicate that something is being saved or set aside for a specific purpose.
Quiet and nonspoken
I wil communicate with that person more
Close-mouthed, close-lipped, quiet, silent, shy, reserved.
A reserved seat on a train, is a seat that you have booked in advance, and which is kept free for your use only. Reserved could also mean a person that is quiet and unlikely to push themselves forward.
A word that means quiet in character is "reserved."
Shy Quiet Loner Introvert Asocial
Silent, quiet, shy
quiet, reserved, and relaxed.
quiet; reserved; silent; laconic
humble, modest, quiet, reserved, self-effacing