Key

Definition

Key can be a noun, adjective, or verb. As a noun, it refers to an object used to operate a lock, a crucial element in a system, or a set of musical tones. As an adjective, it describes something of great importance. As a verb, it means to enter information or to lock/unlock with a key.

Parts of Speech

• Noun
• Adjective
• Verb

Pronunciation

American English

• IPA Pronunciation: /kiː/
• Respelling: KEE

British English

• IPA Pronunciation: /kiː/
• Respelling: KEE

Etymology

The word "key" originates from Old English "cæg," meaning "instrument for opening locks." Its figurative sense of something crucial or significant developed in Middle English, influenced by its use as a metaphor for unlocking understanding or solutions.

Derivatives

• Keyed (adjective)
• Keyboard (noun)
• Keynote (noun)
• Keystone (noun)
• Keyless (adjective)

Synonyms

• Essential
• Crucial
• Core

Antonyms

• Nonessential
• Secondary
• Trivial

Usage

The word "key" is used in multiple contexts. As a noun, it can refer to a physical key, e.g., "He used the key to unlock the door," or a crucial element, e.g., "Trust is the key to a strong relationship." As an adjective, it denotes importance, e.g., "This is a key decision." As a verb, it is used in phrases like "She keyed the data into the system."

Related Terms

• Lock: A device operated by a key for securing something.
• Keynote: The central idea or theme.
• Core: The central or most important part.

Detailed Definitions

Noun

• An instrument for opening locks: A small, shaped metal object used to operate locks.
  • Example: "He forgot his house key at the office."
• A crucial or essential element: Something necessary for achieving a goal or understanding.
  • Example: "Patience is the key to success."
• A set of musical tones: Refers to the scale or tonality in music.
  • Example: "The song is in the key of C major."

Adjective

• Of great importance: Indicates something essential or critical.
  • Example: "He played a key role in the project."

Verb

• To enter information using a keyboard: Refers to typing data into a system.
  • Example: "She keyed in the password."
• To lock or unlock using a key: Refers to using a physical key for operation.
  • Example: "He keyed the car door before entering."