Continually is a related term of interminably.
As adverbs the difference between continually and interminably
is that continually is in a continuous manner; non-stop while interminably is in an interminable manner.
continually
English
Adverb
(
en adverb)
In a continuous manner; non-stop.
In regular or repeated succession; very often.
interminably
English
Adverb
(-)
in an interminable manner
seemingly endless