Definify.com

Webster 1913 Edition

Adj.

That believes; having belief.

–

Be-liev′ing-ly

adv.

ppr.

Giving credit to testimony or to other evidence than personal knowledge.

believing

believing ‎(plural believings)

belief
- 2004, Dermot Moran, ‎Lester E. Embree, Phenomenology: Critical Concepts in Philosophy (volume 2, page 337)
  Some believings are believings with simple certainty; others are more or less uncertain; still others are believings with a reassured certainty, perhaps after a time during which they were uncertain.