A person who is very friendly with everyone and not afraid to talk in public.
A social butterfly.
Someone or something that is very annoying.
A pain in the neck.
A person who doesn't like to spend much money.
A cheapskate.
Someone who is very intelligent and willing to answer all the questions.
A bright spark.
Someone who seems unfriendly and rarely gives reactions to other people.
A cold fish.
A person who enjoys staying alone and doesn't like to socialize.
A lone wolf.
A person who is always happy and satisfied.
A happy camper/pill.
A person, especially a girl who is very shy to talk with people and doesn't dare to participate in social activities.
A wallflower.
A lazy person who usually wants to sit and watch television.
A couch potato.
A girl or boy who likes to attend parties very often.
A party animal.
A person who can't keep a secret and tells the others.
A big mouth.
A relaxed person who doesn't get upset easily.
An easy-going or laid-back person.