The phrase "a main weakness" is correct and usable in written English.
It can be used when discussing a significant flaw or disadvantage in a person, system, or argument.
Example: "In her analysis, she identified a main weakness in the company's marketing strategy that needed to be addressed."
Alternatives: "a primary weakness" or "a key weakness".
A main weakness of Lamport's OTP is that the length of the hash chain is finite, meaning that OTP generation is also finite.
The framework has been implemented and the overall performance achieved the target score that lies in the range of Systematic Approach level, more over the areas related to "people and organization" category which represented a main weakness in GAEB have achieved a remarkable improvement.
A main weakness of LR is that outliers can affect the results significantly.
A main weakness of the study is the healthy-worker bias that is clearly operating in this study population, as shown by the significantly lower asthma prevalence among the dust exposed workers.
A main weakness in these studies is the ecological study design, only using season of diagnosis as a proxy of vitamin D. This study investigates the relationship between vitamin D and prognosis in patients with prostate cancer, using individual serum levels of 25(OH D.
All are hampered by a play whose main weakness is giving us more information than we want about any of its characters.
Waverers cannot have found it normal that a bidder should sell shares in the company it is trying to buy, as Olivetti did just before it announced its increased offer at the end of March (the firm later said blandly that it had made a mistake).Yet the main weakness is Olivetti's management.
Besides his occasional fumbles on policy (and a strange fondness for intellectual gimmicks, such as the "Big Society", an unhelpful slogan for his ideas), Mr Cameron's main weakness is a yearning to be liked.
Clearsightedness, one of his main strengths, may help explain his perceived main weakness as a leader – his lack of a political concept.
According to Brigadier Mahmood Shah, the army officer who drafted the deal with Nek Muhammad, Haji Omar's main weakness is a certain irascibility caused by a Soviet bullet lodged in his brain.
The wounded wingbat, screaming in its way, slid all the way down the poking stick nearly to its hilt, gored through and through, the stick that entered its eye having emerged from the paper-thin rear of its skull, the main weakness of a wingbat, and it gargled out a goodly amount of its brownish life fluid as it slid down the poking stick toward the wary hand of the priest in question.
