Illimitable is a related term of unbounded.
As adjectives the difference between illimitable and unbounded
is that illimitable
is impervious to limitation, without limit while unbounded
is having no boundaries or limits.
Impervious to limitation, without limit.
* 1909 , Jack London,
- What a tremendous affair it was, the world of Homer, with its indeterminate boundaries, vast regions, and immeasurable distances. The Mediterranean and the Euxine were illimitable stretches of ocean waste over which years could be spent in endless wandering.
having no boundaries or limits
:The universe is finite but unbounded
:Our everlasting, unbounded love