Importune (verb)

1. To persistently demand or ask for something; to persistently urge or press for something.
2. To annoy or bother someone persistently.

Origin:

Late middle english: from old french importuner, from latin importunare "to trouble, molest", from in- "not" + portus "harbor, haven".

Examples:

1. He importuned her for a date, but she refused.
2. She importuned the manager for a promotion, but her request was denied.
3. The beggar importuned the passerby for some money.
4. He importuned his friend to lend him money.
5. The lawyer importuned the judge for leniency.