"considerably weakened" is a correct and usable phrase in written English.
It is typically used to describe something or someone that has become significantly less strong or effective. Example: The company's financial stability was considerably weakened after the stock market crash.
"All the political elements that have supported an open global economy have considerably weakened," Gilpin concludes.
"France's trade unions have been considerably weakened in the past decade.
Michel replaced him but the squad is considerably weakened, with 80% of last season's starting XI having left.
His isolation and the growing impatience with his leadership among Palestinians have considerably weakened Mr. Arafat's once autocratic rule.
Now that team is considerably weakened, the spotlight falls on him to produce the best he can out of it.
Second, he said, "Kayani and Pasha have both been considerably weakened by the actions of the Americans".
Although American and Philippine officials say this campaign has considerably weakened the group during the past five years, analysts say the militants remain a high security threat.
However, its stance has undeniably split the conservation lobby, meaning its voice in parliament during the debate will be considerably weakened.
"The journalists considerably weakened their government's leverage against the North," said Kim Tae-woo, a North Korea expert at the Korea Institute for Defense Analysis in Seoul.
But she argued that the application of Section 66A in recent years has considerably weakened India's reputation as a champion of free speech.
In some states, gun safety is being notably strengthened; in others, it is being considerably weakened by the gun lobby in the name of protecting gun rights.
