unreliability
🇺🇸
/ˌʌnrɪˌlaɪəˈbɪləti/
🇬🇧
/ˌʌnrɪˌlaɪəˈbɪləti/
When something or someone is not dependable or consistent.
The unreliability of the train service caused many delays.
信頼性のなさ