The phrase "one cannot overlook" is correct and usable in written English.
You can use it when you want to emphasize the importance of something or to express that something should not be ignored. For example, "One cannot overlook the importance of proper nutrition for a healthy lifestyle."
"Though one cannot say I am a rock-and-roll artist, one cannot overlook the folk music of the sixties, and the immense effect it had on popular music, including rock and roll," she said.
One cannot overlook the communal benefit to empowering Americans with records through employment opportunities.
And even if most have raised far less funding than Uber, one cannot overlook the rash of Taxi apps that have proliferated across the planet in the last few years.
One cannot overlook the boat speed that Jessica and Greg Newman had last year.
In an era where Muslims are too frequently cast as antagonistic to American culture, one cannot overlook Tahir's welcoming personality.
According to Urban Dictionary--and maybe Liz Lemon--a deal breaker in a relationship is "the catch" that one cannot overlook in a particular individual and ultimately outweighs any redeeming quality he or she may have.
As a science writer (and an admittedly skeptical one) I cannot overlook product endorsements that rest on shaky evidence, and I'm not about to ignore the obscene amount of money tied to the advice of media personalities.
Perhaps Apple was just being extremely careful not to draw any attention to the widely speculated name of its new multimedia device prior to this morning's announcement, but one simply cannot overlook the fact that the company doesn't have ownership over any domain names related to 'iPad'iPad
Slavery and segregation were all-encompassing, and their legacy of racism is one we cannot overlook or cast aside as history.
When there are several catches, the deal breaker is the one you just cannot overlook and/or tolerate.
One cannot however, overlook the possibility of inducement in Accra, among the significant number of accredited hospitals, as well as the other urban areas in the country such as Sunyani, Takoradi, Cape Coast, etc. which are also likely to have a moderately significant density of physicians in the private sector.
