Keep (verb)

1. To have or retain in one's possession.
2. To hold or maintain in one's power or control.
3. To preserve or retain the good condition of.

Origin:

Middle english 'kenep' from old english 'cēpan' meaning to keep, observe, from germanic 'kapjaną' meaning to keep, preserve.

Examples:

1. Please keep this a secret.
2. He kept his balance.
3. She keeps the keys in her bag.
4. I will keep the tickets safe.
5. The company keeps growing every year.