Become (verb)

1. To change into something different.
2. To start to be or develop into something.
3. To look good or suitable on someone or something.
4. To come into existence.
5. To come into a particular state or condition.

Origin:

Derived from old english 'becuman' meaning 'come to pass'.

Examples:

1. She became a doctor.
2. The sky became dark.
3. The dress becomes you.
4. A new day has become.
5. The situation has become critical.