The phrase "a tough determination" is correct and usable in written English.
It can be used when referring to a decision or conclusion that is difficult to make or reach.
Example: "After much deliberation, we came to a tough determination about the project's future."
Alternatives: "a difficult decision" or "a challenging conclusion".
She is passionate, impetuous and confident, with a tough determination to grab the brass ring that has been presented to her.
But Mr. Dowd's characters also embody a ravaged rural stoicism, a tough determination to survive, which contemporary country music has turned its back on with an embarrassed shudder.
He embraced a tough determination that believed in American democracy far more than those who sought to deny Negroes their basic human rights.
In the Administration's eyes, each has demonstrated America's tough determination to check pro-Soviet adventurism in the third world.
It's hard to tell her sullen timidity at the beginning from her tough determination at the end, nor is it clear what is really at stake for her.
Generally the hero-teacher is a self-sacrificing Christ figure, willing the culturally deprived (read: poor) students to come out of the ghetto with her deep empathy and tough determination.
"It's 2,300 pages that affect every facet of the financial services industry," said Justin Daly, a former counsel at the S.E.C. "If you look at a lot of the important provisions, Congress delegates authority to the agencies to make the really tough determinations.
I know that shaking the legacy of penury and struggle in childhood is a tough call, requiring determination and resilience, and both are hard to dredge up if you are suffering from depression – so do please go to a GP and get yourself a diagnosis.
According to Brountas, the toughest determination is placed on non-management investors such as venture capitalists or angel investors who hold more than 10% of shares.
It is going to be a tough balancing act, but with determination, you can surely steel your heart.
