Unknown Unknown

Pronunciation: /ʌnˈnoʊn ʌnˈnoʊn/

Definitions of unknown unknown

noun a person, place, thing, or idea

Example Sentences

A1 The concept of 'unknown unknown' is difficult for beginners to understand.

A2 In the game, players must uncover the 'unknown unknown' to progress to the next level.

B1 The detective was puzzled by the 'unknown unknown' in the case.

B2 The scientist's research focused on exploring the realm of 'unknown unknowns' in the universe.

C1 Philosophers often ponder the nature of 'unknown unknowns' and their impact on human knowledge.

C2 The artist's work delves into the depths of the 'unknown unknown' to provoke thought and introspection.

adjective describing word that modifies a noun or pronoun

Example Sentences

A1 The students were afraid of the unknown unknown creature in the dark forest.

A2 She felt a sense of unease as she entered the unknown unknown room.

B1 The detective was determined to solve the mystery of the unknown unknown object found at the crime scene.

B2 The scientist was intrigued by the unknown unknown properties of the newly discovered element.

C1 The explorer ventured into the unknown unknown depths of the ocean in search of new species.

C2 The philosopher contemplated the nature of the unknown unknown in the universe.

adverb describing word that modifies a verb, adjective, or another adverb

Example Sentences

A1 The path through the forest was unknown unknown to the hikers.

A2 She entered the dark, unknown unknown room cautiously.

B1 The explorer bravely ventured into the unknown unknown territory.

B2 The detective was determined to uncover the unknown unknown truth.

C1 The scientist delved into the depths of the unknown unknown phenomenon.

C2 The philosopher pondered the mysteries of the unknown unknown universe.

Examples of unknown unknown in a Sentence

formal The scientist was puzzled by the presence of an unknown unknown in their research findings.

informal I have no idea what I'm supposed to do with this unknown unknown situation.

slang I'm totally lost when it comes to dealing with these unknown unknowns.

figurative Sometimes life throws us curveballs in the form of unknown unknowns.

Grammatical Forms of unknown unknown

• past tense: became unknown unknown
• plural: unknown unknowns
• comparative: more unknown unknown
• superlative: most unknown unknown
• present tense: is unknown unknown
• future tense: will be unknown unknown
• perfect tense: has been unknown unknown
• continuous tense: is being unknown unknown
• singular: unknown unknown
• positive degree: known
• infinitive: to be unknown unknown
• gerund: being unknown unknown
• participle: unknown unknowned

Origin and Evolution of unknown unknown

First Known Use: 2002 year

Language of Origin: English

Story behind the word: The term 'unknown unknown' was popularized by former United States Secretary of Defense Donald Rumsfeld during a press briefing in 2002.

Evolution of the word: Initially used in the context of risk assessment and decision-making, the term has since been adopted in various fields to describe situations where information or knowledge is lacking in both known and unknown aspects.