Introverts.
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.
I wil communicate with that person more
Quiet and nonspoken
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
The phrase "no, he's as quiet as quiet can be" conveys a mood of calmness or tranquility, suggesting a serene and peaceful atmosphere. It implies a sense of stillness, indicating that the person in question is not only quiet but perhaps also introspective or reserved. This mood can evoke feelings of solitude or contemplation.
quiet, reserved, and relaxed.
quiet; reserved; silent; laconic