Not reliable.

unreliability

In an unreliable manner.

The quality of being unreliable.

plural of unreliability

Absence of reliance.

(literary theory) A narrating character or storyteller in a literary or other artistic work—such as a novel, play, song, or film—who provides inaccurate, misleading, conflicting, or otherwise questionable information to the reader or audience.

plural of unreliable narrator