The phrase "exceptionally strict" is correct and usable in written English.
You can use it when you want to describe someone or something that is more stern or stringent than usual. For example, "My teacher's grading standards are exceptionally strict, so I have to work hard to get a good grade."
For example, despite a declining population, no one in Japan — essentially a closed society — is talking seriously about reforming exceptionally strict immigration laws.
Although Nantucket has exceptionally strict rules on architecture, style, color and trim -- the rules dictate, for example, that in most circumstances houses must be gray -- "you can still make an old house new inside," he said.
The court will sooner or later return to the subject of the scope of the Second Amendment right first recognized in 2008 in District of Columbia v. Heller, which struck down parts of an exceptionally strict local law that barred keeping guns in the home for self-defense.
This diet is exceptionally strict and extremely personalized for Gisele and Tom's careers, goals, and performance needs -- it's not meant to be a sweeping generalization of what you should and shouldn't consume.
In the case of the euro, the monetarist stance of the European Central Bank (ECB) is reinforced by an exceptionally tight fiscal policy regime with strict, legally binding limits on the level of national budget deficits and public debt.
Exceptionally, group V TAARs [13] had strict orthologs in all teleost fish species (Fig. 2).
First there's the exceptionally high tax burden, then there's the strictest gun laws in the nation, and let's not forget about San Francisco and Nancy Pelosi.
But it is weirdly comforting to know that in addition to their workouts and exceptionally amazing genes, Gisele and Tom are also really strict about what they eat.
For the first transition in power since the attacks of Sept. 11, 2001, much of the capital was under exceptionally tight security, with a two-square-mile swath under the strictest control.
They want Canadians to ask why the country compares its violent-crime rates to those of the United States, a country with exceptionally high gun-related mortality, rather than places where regulation is stricter and rates are relatively low.
Near-equivalent definitions were accepted when stricter definitions were unavailable, so that never smokers could include occasional smokers (or exceptionally, light smokers), while current smokers could include, and ex-smokers exclude, those who quit smoking up to two years ago.
