Lightless
Part of speech: adjective
Definition: Lacking light; unilluminated
Unseeable
Part of speech: adjective
Definition: invisibleunimaginable
Lightless as an adjective is lacking light; unilluminated while Unseeable as an adjective is invisible
Part of speech: adjective
Definition: Lacking light; unilluminated
Part of speech: adjective
Definition: invisibleunimaginable
We hope you now know whether to use Lightless or Unseeable in your sentence.