Unbounded is a related term of vigorous.
As adjectives the difference between unbounded and vigorous
is that unbounded is having no boundaries or limits while vigorous is physically strong and active.
unbounded
English
Adjective
(
en adjective)
having no boundaries or limits
:The universe is finite but unbounded
:Our everlasting, unbounded love
Derived terms
*unbounded manifold
*unbounded nondeterminism
*unbounded set
*unbounded system
*unbounded wave
vigorous
English
Alternative forms
* vigourous
Adjective
(
en adjective)
Physically strong and active.
Rapid of growth