tenacious

[Maria_maria]

tenacious (t'-NAY-shus) adj. - not readily letting go of, giving up, or separated from an object that one holds, a position, or a principle

Derivatives:
tenacity n.

sample:
The difference between successful and unsuccessful salesmen is that the successful ones have the tenacity to keep calling difficult clients until they make a sale.

[pinoypower]

tenacious (t'-NAY-shus) adj. - not readily letting go of, giving up, or separated from an object that one holds, a position, or a principle

Derivatives:
tenacity n.

sample:
The difference between successful and unsuccessful salesmen is that the successful ones have the tenacity to keep calling difficult clients until they make a sale.

Here's another example:

In surviving all the crisis of her administration, President Arroyo showed that she is a tenacious leader.:D