"too definite" is correct and can be used in written English.
For example, "The solution to the problem was too definite to be implemented quickly."
The thoughts expressed to me by the music I love are not too indefinite to be put into words, but on the contrary, too definite.
The performers move about on a mostly bare stage, suggesting, without being too definite, organisms of various species populating the earth and a human contingent exploring, settling, mastering, and running amok.
The tree peony flowers bloom a bit earlier than those of the herbaceous peony hybrids, although with the plethora of hybrids in all forms available these days it is hard to be too definite about when they bloom.
As the German writer Franz Hessel, an occasional collaborator with Walter Benjamin, put it, "in order to engage in flânerie, one must not have anything too definite in mind".
Samantha Ellis, a playwright brought up in London in an Iraqi-Jewish family, offers herself up in this warm-spirited biblio-autobiography as just such a susceptible reader as Catherine, unable and unwilling to draw too definite a line between life and books.
It is at once too definite and too sketchy.
His idea of what his escalation would do seemed moderate, too, and definite: self-contained and self-terminating.
Although its sensitivity is too low for definite exclusion of abdominal organ injury, proponents of ultrasound argue that ultrasound-based clinical pathways enhance the speed of primary trauma assessment, reduce the number of computed tomography scans and cut costs.
It's strong too, with a definite nicotine tingle.
Sowers, too, has a definite objective in mind when it comes to securing US interests in Afghanistan.
Innovative options such as imiquimod cream, PDT, and BTA may be of certain importance; however, the little data available is too contradicting for definite recommendations.
