unreliable

/ˌʌnɹɪlˈa‍ɪəbə‍l/

/ˌənɹiˈɫaɪəbəɫ/, /ˌənɹɪˈɫaɪəbəɫ/

unreliable

not showing enough assurance to be dependend on or trusted

antonyms : reliable

liable to be erroneous or misleading

dangerously unstable and unpredictable

not being responsible for one's acts or behaviors

Examples

1. The detective is chasing down a lead that is likely to be a wild goose chase, as it's based on unreliable information.

2. Mary keeps lending money to her unreliable friend, even though she never gets paid back.

3. "The temperature record is unreliable."

4. humans are unreliable.