unreliably
Definitions
In a manner that cannot be trusted or depended upon.
In a way that is inconsistent or prone to failure.
Examples
The old generator functioned unreliably, often cutting out in the middle of the night.
Because the witness reported the events unreliably, the detective had to look for more concrete evidence.
Synonyms
erratically inconsistently capriciously unpredictably fitfully precariously shakily
Antonyms
reliably consistently dependably steadily trustworthily predictably stably