behaviour

4. (adj.) thinking about a person or thing too much or all the time
6. (idiom) to do something bad or illegal because others encourage you to do so
7. (n.) a widely held belief or idea of what a particular type of person or thing is like, especially one that is unfair or untrue in reality
8. (n.) the activity of using messages or images on social networking sites, emails, etc. to frighten or upset someone
9. (n.) the excessive use of alcohol
11. (n.) the recognition between individual and people from similar category
12. (n. phr.) the wrong ideas on moral principles
14. (n.) the problem of teenagers killing themselves intentionally

1. (n.) the need to take a harmful drug regularly
2. (n.) the practice of treating people differently in an unfair way
3. (adj.) not behaving in a way which is as calm and wise as people expect from someone of your age
5. (adj.) harmful to other people, or to society as a whole
10. (n.) a natural ability to influence and interest other people and make them admire you
13. (n. phr.) young people who spend most of their time at home, and have limited social interactions with the outside world