The phrase "alleged strength" is correct and usable in written English.
It can be used when discussing a claim or assertion about someone's or something's strength that has not been proven or confirmed.
Example: "The athlete's alleged strength was called into question after the recent doping scandal."
Alternatives: "purported strength" or "claimed strength".
Much has been made of Trumps alleged strength among minorities, but this is a distortion.
Way back in March 2007, when the official unemployment rate was a wildly deceptive 4.5percentt and the Bush crowd was crowing about the alleged strength of the economy, I wrote: "People can howl all they want about how well the economy is doing.
Whatever McCain's motivation -- his eagerness to demonstrate how he is "above party" may be primary -- it nonetheless is surprising since the first debate was to center on foreign policy, McCain's alleged strength.
They protected the lead when their alleged team strength, the bullpen, closed the final three innings for starter Tim Redding (5-3).
Under intense questioning from lawmakers that lasted more than four hours, the strength coach, Brian McNamee, alleged that he had injected the seven-time Cy Young Award winner with steroids or human growth hormone in 1998, 2000 and 2001.
In a recent debate, Tillis alleged that President Obama "gives strength to the terrorists" by way of his wayward foreign policy-a charge that enlivens elements of the electorate which already suspect that Barack Hussein Obama harbors some bizarre ulterior motives in his dealings with the Islamic State.
With this event, Cosby enters something of a hall of infamy in which decommissioned statuary stands – or rather does not stand – in mute testimony to the strength of feeling occasioned by revelations alleged and actual about once-hallowed figures.
For some it might be an admission; others may still be wrestling over the strength of the evidence, or whether the offenses alleged actually rise to a level demanding impeachment.
He has taken a hard line on immigration and demanded an explanation as to why diversity is a strength in the United States, in addition to hyping alleged crimes by undocumented immigrants.
It is alleged to have involved assassination and torture, but many argue that it successfully reduced the level of insurgent strength in South Vietnam.
[Her] alleged background . . .
