"firmly understand" is an acceptable phrase in written English.
You can use it when you want to emphasize that someone has a clear grasp on a concept or idea. For example, "I firmly understand the importance of maintaining a healthy lifestyle."
While they may be better at offloading the risks, and obliged to set more money aside to absorb them, the executives who lead the firms will have to firmly understand the trading business.
In a movie genre where the Kleenex are typically more plentiful than the belly laughs, "50/50" is anything but expected or melodramatic -- yet it poses the question of whether it's okay to find humor in life's tragedies, especially those we firmly understand are no laughing matter.
Later, the Bookers didn't have to needle their boys about studying, because the family rules were firmly understood — anything less than A's and B's on their report cards meant no sports.
The role of business has to be firmly understood by the CEO down, that it is there to serve the broader society, the common good and only by doing that very well you will be rewarded, but it has to start there and end there.
The results suggest that while the combustion model is capable, spray model influences must be firmly understood before validation can be accomplished in liquid fueled contexts.
Several randomized, controlled trials have found high frequency repetitive transcranial magnetic stimulation (HF-rTMS) to be effective for treating major depressive disorder (MDD), but its antidepressant mechanisms have yet to be firmly understood.
The National Urban League acknowledges that there is still much work to be done to achieve racial equality, but also expresses that it firmly understands that rolling back on even small gains is a step in the wrong direction.
When individualism is coupled with the social construction of race founded on stereotypical views of black people in historical and contemporary writings and other venues, the black deficit model remains firmly understood as an acceptable way to define the black experience.
A few things are firmly understood and one of them is that climate is changing.
His clientele, I was politely but firmly given to understand, didn't go in for such measures (being, presumably, in prime neo-anorexic shape), and he suggested that I try Orchard Street or Brighton Beach.
Poles, firmly pro-American, understand that civilians die in every war and are dismayed only that Mr. bin Laden is proving hard to catch, said Bronislaw Geremek, a former foreign minister.
