Unreliably Synonyms and Antonyms

In an unfaithful undependable unreliable manner
(Adjective)
Synonyms:
  1. uncertainly
  2. shiftily
  3. unfaithfully
  4. dubiously
  5. irresponsibly
  6. undependably
Antonyms:
  1. dependably
  2. faithfully
  3. reliably