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Definition of open

open

/ˈoʊ.pən/
o · pen

Adverb:openly
•
Plural:opens
•
Past Simple:opened
•
Past Participle:opened
•
Present Participle:opening
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open Lexical Profile

open Game Scores & Validity

• adjective

1

Officially operating, conducting business, or ready to receive customers or visitors.

Example

"The museum remains open until eight o'clock on Thursday evenings."


2

Allowing access, passage, or a view through an empty space; not closed, fastened, or blocked.

Example

"She left the window open to let the cool evening breeze into the room."


3

Receptive and willing to consider new ideas, perspectives, or possibilities; not finally settled or decided.

Example

"The research team is open to revising the hypothesis if new evidence emerges."


4

Frank, communicative, and honest in speech or behavior; not secretive or deceptive.

Example

"The committee appreciated her open and transparent approach to the budget challenges."


5

Wide, expansive, and free from enclosing walls, buildings, or dense trees.

Example

"They hiked across miles of open countryside before reaching the coastal village."

Synonyms
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Antonyms
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• verb

1

To establish, launch, or officially begin operating a business, institution, account, or public event.

Example

"They plan to open a new bakery in the downtown district next spring."


2

To unfold, spread out, or unwrap something that was folded, rolled, or packaged.

Example

"She sat by the fireplace to open her birthday presents and read the cards."


3

To move or adjust a door, window, lid, or barrier so as to leave a space allowing access, passage, or view.

Example

"He opened the heavy oak door and welcomed the guests into the hall."


4

To afford access or lead directly into another room, building, or area.

Example

"The French doors in the dining room open onto a sunlit stone patio."

Synonyms
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Antonyms
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• noun

1

Outdoors or an unenclosed, unobstructed space; also, a state of public knowledge free from secrecy (usually preceded by 'the').

Example

"After months of quiet negotiations, the merger plans were finally brought out into the open."


2

A sports tournament or championship in which both amateurs and professionals are eligible to compete.

Example

"She qualified for the national tennis open after winning three regional tournaments."

Synonyms
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Antonyms
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• Rhymes for open

Word Origin & Etymology

From Old English 'open', of Proto-Germanic origin (*upanaz), closely related to the word 'up' and originally conveying the sense of lifting or raising a cover.

Cite this Entry


Wordmom. (2026). Definition of Open. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/open
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