The phrase "unsuitability to" is grammatically correct and can be used in written English.
It is typically used to describe a lack of compatibility or appropriateness for something. Here is an example sentence: The candidate's unsuitability to the job was evident during the interview, as they lacked the necessary skills and experience.
I thought that perhaps my sex had something to do with my unsuitability to breathe Oxygen's rarefied air.
Ms. Giovinazzo has characterized Mr. McMahon's vote for an 18.5percentt increase in the city's property tax rate last year as evidence of his unsuitability to represent the 49th Council District.
The Labour leader was careful not to fall into obvious bear traps – such as calling Cameron a liar in saying he received no "specific information" about Andy Coulson's possible unsuitability to become his communications chief.
There are a number of reasons young people play truant: special educational needs, peers, personal issues or unsuitability to the classroom environment and a requirement for practical learning surroundings.
But some Republicans said the situation in Iraq would only focus more attention on Mr. Kerry and what they said was his unsuitability to run the war on terrorism.
4) Terminate Mr. Thompson for cause immediately given his demonstrable unsuitability to remain Chief Executive Officer and a director of Yahoo! and accept the resignation of Ms. Hart for similar reasons.
However, it may well be that this failure is due to unsuitability of HEK293-pmeLUC cells to report extracellular ATP in vivo.
Review of patient details for these transplants indicated that this delay related to unsuitability of a planned recipient at the first centre due to either a positive cross match or recipient medical issues resulting in secondary reallocation.
Nor is his obvious unsuitability a drawback to this young woman who "would surely have commanded one of the most lavish dowries in Europe -- from a Bourbon or a Borghese, a Hohenzollern, a Romanov, from any number of Hapsburgs".
The popularity of football (soccer) in the suburbs, the unsuitability of baseball to the inner city (because of the need for large fields), and fewer collegiate scholarships being offered in baseball in comparison with gridiron football and basketball also served to make the game less attractive to young men in the United States.
Further, it is observed that the concentration of major ions in groundwater of the area is high at many locations leading to unsuitability of groundwater for drinking, irrigation and domestic purposes.
