importunate

Wordsworth has illustrated how an unwise and importunate demand for a reason from a child may drive him into invention.

Another rap, louder and more importunate, echoed through the large room.

"My men and I have a devilish importunate creditor," said he, slapping his stomach.

Somewhere near her feet the cricket gave out an importunate chirp.

The memories of that time, and of the importunate thoughts that had haunted him then, at the opening of life, returned to him now.