'Stably' definitions:

Definition of 'stably'

From: WordNet
adverb
In a stable solid fixed manner; "the boulder was balanced stably at the edge of the canyon"
adverb
In a stable unchanging manner; "the death rate in Russia has been stably high"

Definition of 'Stably'

From: GCIDE
  • Stably \Sta"bly\ (st[=a]"bl[y^]), adv. In a stable manner; firmly; fixedly; steadily; as, a government stably settled. [1913 Webster]