a person who thinks that they know much more than other people

people of the same sort or with the same tastes and interests will be found together.

very calm, especially when this is surprising

a lazy and inactive person especially : one who spends a great deal of time watching television.

someone who is very interested in other people’s private lives and activities and tries to get involved in them in a way that is annoying

active; doing the things you usually do

to do something as well as you can

at one's best or most skillful.

someone who is very energetic, determined to be successful, and able to deal with new or difficult situations easily

someone who criticizes other people but who does not have any proper experience of the activity the other people are doing

someone who is very interested in technical or scientific subjects, especially computers. This word usually shows that you think people like this are boring

practical, reasonable, and friendly

to be very pleased about something