Definition of unreliability in English:
 unreliability
noun ʌnrɪlʌɪəˈbɪlɪtiˌənrəˌlaɪəˈbɪlədi
mass nounInability to be relied upon or trusted.
 she causes havoc in the office because of her unreliability
 the unreliability of memory
 Example sentencesExamples
-  All he had to show for his service was a record of unreliability.
 -  The memory researcher appeared on a television show about the unreliability of eyewitness testimony.
 -  Accounts of population movements in the past usually begin with a reference to the unreliability of the data.
 -  The bikes quickly developed a reputation for unreliability—they couldn't handle the hard paces through which Americans put them.
 -  In discussing these events, Kelsey does an excellent job of highlighting the unreliability of contemporary written sources.
 
  Definition of unreliability in US English:
 unreliability
nounˌənrəˌlaɪəˈbɪlədiˌənrəˌlīəˈbilədē
Inability to be relied upon or trusted.
 she causes havoc in the office because of her unreliability
 the unreliability of memory
 Example sentencesExamples
-  The bikes quickly developed a reputation for unreliability—they couldn't handle the hard paces through which Americans put them.
 -  All he had to show for his service was a record of unreliability.
 -  Accounts of population movements in the past usually begin with a reference to the unreliability of the data.
 -  The memory researcher appeared on a television show about the unreliability of eyewitness testimony.
 -  In discussing these events, Kelsey does an excellent job of highlighting the unreliability of contemporary written sources.