The phrase "a deeper and lasting" is correct and usable in written English.
It can be used when describing something that has a profound and enduring quality or effect.
Example: "The workshop aimed to foster a deeper and lasting understanding of the subject matter among participants."
Alternatives: "a profound and enduring" or "a significant and lasting".
This kind of collaboration, she said, could have a deeper and longer lasting impact on the world of shoes than handouts ever could.
Alcohol and drugs soothe the doubting voices and the pain for a bit, but if we can accept our own unique, albeit awkward, awesomeness, we'll experience a deeper and longer lasting high.
No, the pain cuts a lot deeper and lasts a lot longer when the regrets start, as they did for me, at 49, when you are dropping off your daughter at college and you have the whole long ride back to think about how much more you could have done and how much more you could have been there.
"We wanted to create something that was deeper and lasting.
President Obama faces a knotty decision in whether to approve the much-delayed Keystone oil pipeline: a choice between alienating environmental advocates who overwhelmingly supported his candidacy or causing a deep and perhaps lasting rift with Canada.
Valuation is not stretched for the energy sector unless you believe that George Soros is right and that the worldwide credit crisis cuts deeper and lasts longer.
Lewis writes about his last school, Malvern, at such length, and with such horror — with far more intensity than he writes even about serving on the Western Front — that it's clear that the trauma, coming at a time of sexual awakening, was deep and lasting.
The damage will be deep and lasting.
The debt we owe the people who gave us Central Park is deep and lasting.
He had been the pupil at Alexandria of a self-taught philosopher called Ammonius, who also taught the Christian Origen and the latter's pagan namesake, and whose influence on his pupils seems to have been deep and lasting.
