The phrase "able to spare" is correct and usable in written English.
It can be used when referring to having extra time, money, or resources that one can afford to give or use for something else.
Example: "If you have any time able to spare, I would appreciate your help with this project."
Alternatives: "willing to give" or "available to lend".
Ethiopia is rich in antiquities, and ought to be able to spare this one.
Just knock on a neighbor's door, and ask if she might be able to spare some wireless.
Well, we might not be able to spare any SCRATCH, but we sure can show our support.
Without the allowance, the care home would not be able to spare the communal vehicle to ferry him home.
Protons were better able to spare one kidney completely and deliver less dose to one (generally the left) kidney than photons.
At the end of the research it has been concluded that parents encounter many economical (e.g: not being able to spare time, providing equipment economically etc).
While we should all be overjoyed by Wee Wee's escape, we must ask ourselves: Are we able also to spare a thought for the millions of his hooved brethren who are still languishing on the factory farms that produce virtually all of our pork?
Using reconstructive techniques such as prosthesis and flap surgery, we are able to even spare the limbs of patients who have recurrent bone and soft tissue tumors [3].
More interestingly, TRF was able to selectively spare the normal human prostate epithelial cells, an important characteristic of effective chemoprevention strategy.
Bear in mind too, that if you can raise a 10% deposit you are likely to get a better deal from the mortgage company as it demonstrates that you have some spare money and are able to save.
Bristol's oncology development head, Fouad Namouni, says the company is "happy" that some patients with high-TMB may in the future be able to be spared chemotherapy.
