UNBEKNOWNST

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does unbeknownst mean? 

• UNBEKNOWNST (adjective)
  The adjective UNBEKNOWNST has 1 sense:

1. (usually used with 'to') occurring or existing without the knowledge of

  Familiarity information: UNBEKNOWNST used as an adjective is very rare.

• UNBEKNOWNST (adverb)
  The adverb UNBEKNOWNST has 1 sense:

1. without someone's knowledge

  Familiarity information: UNBEKNOWNST used as an adverb is very rare.

 Dictionary entry details 

• UNBEKNOWNST (adjective)

Sense 1

Meaning:

(usually used with 'to') occurring or existing without the knowledge of

Synonyms:

unbeknown; unbeknownst

Context example:

she had been ill for months, unbeknownst to the family

Similar:

unknown (not known)

• UNBEKNOWNST (adverb)

Sense 1

Meaning:

Without someone's knowledge

Synonyms:

unbeknown; unbeknownst

Context example:

unbeknownst to me, she made all the arrangements

 Context examples 

Unbeknownst to the entire space physics community, 34 years ago Voyager 2 flew through a plasmoid, a giant magnetic bubble that may have been whisking Uranus' atmosphere out to space.

(The ice giant Uranus appears to be losing a bit of its atmosphere to space, NASA)