unreliable
un‧re‧li‧a‧ble AC /ˌʌnrɪˈlaɪəbəl◂/
adjective
The car’s becoming very unreliable.
an unreliable witness
un‧re‧li‧a‧ble AC /ˌʌnrɪˈlaɪəbəl◂/
adjective Word Family: noun: reliability, reliance; adjective: reliable ≠ unreliable, reliant; verb: rely; adverb: reliably
unable to be trusted or depended on: