Meaning:
A noun used to describe someone you are not friends with, maybe because you don’t like them or because you haven’t gotten to know them yet, that you have met a couple times.
Example:
“Do you know Bill?” — “Yes, he is an acquaintance of mine.”

3.friendly

Meaning:
An adjective that describes a person who is good with people and it is easy for them to make friends.
Example:
“I like him already, he is so friendly!”

4. casual

Meaning:
An adjective to describe a situation where people do not have to wear fancy or expensive clothes and can talk about anything with people around them without worrying too much about being rude.
Example:
“What are you wearing to the party?” — “It is a very casual party so I’m wearing shorts and a t-shirt.”

5. shy

Meaning:
An adjective to describe someone who does not enjoy talking to people or being around a lot of people not because they don’t like people but because it makes them uncomfortable.
Example:
“I didn’t talk to him very much. He is very shy so he stood by himself.”