Unbeknown
Part of speech: adjective
Definition: Not beknown
Unbeknownst
Part of speech: adverb
Definition: (followed by to) Without the knowledge of.
Difference between Unbeknown and Unbeknownst
What is the difference between Unbeknown and Unbeknownst?
Unbeknown as an adjective is not beknown while Unbeknownst as an adverb is (followed by to) without the knowledge of.
We hope you now know whether to use Unbeknown or Unbeknownst in your sentence.