vocabulary (definitions)

Someone who is ........................ behaves or thinks in a way that is typical of someone much younger – used to show disapproval 

Feeling uncomfortable or nervous and worrying about what people think of you, for example because you have made a silly mistake, or because you have to talk or sing in public

To dislike and have a low opinion of someone or something

Reasonable, practical, and showing good judgment

extremely unpleasant and making you feel sick 

the official line that separates two countries, states, or areas, or the area close to this line

........ are lines on your face and skin that you get when you are old

someone you know, but who is not a close friend

a strong desire to do or have something regularly

to make known something that was previously secret or unknown

not feeling at all confident about yourself, your abilities, or your relationships with people

unhappy because something you hoped for did not happen, or because someone or something was not as good as you expected

to accept an unpleasant or sad situation and no longer feel upset or angry about it

doing careless things without thinking or worrying about the possible bad results 

a song that a particular group of people consider to be very important

to spend a lot of time in a particular place or with particular people