Exam: TOEFL

Definition: Showing a play of colors like an opal, often with a milky or shimmering appearance.

Example: The opalescent surface of the water reflected the colors of the sunset beautifully.

Definition: Not able to be seen through; not transparent or clear.

Example: The glass was opaque, making it impossible to see what was inside the box.

Definition: A substance that does not allow light to pass through, making it impossible to see through it.

Example: The artist used an opaque paint to create a rich, dark background for the painting.

Definition: In a way that is not transparent or clear; not allowing light to pass through.

Example: The glass was treated so that it could be seen only opaquely.

Definition: This word describes something that does not allow light to pass through, making it difficult to see through it. It is used to compare the degree of opacity between two or more objects.

Example: The new curtains are opaquer than the old ones, blocking out more light.

Definition: Not closed; allowing access or passage; free to enter or use.

Example: The door was left open, inviting everyone to come in.

Definition: To become not closed; to allow access or passage.

Example: The door opened slowly as I approached it.

Definition: A contest or tournament where anyone, regardless of skill level, can take part, or a state of being visible and not hidden.

Example: The annual tennis open attracts players from all over the world.

Definition: To make something not closed or to allow access to it by moving or removing a barrier.

Example: Please open the door so we can go outside.

Definition: The quality of being generous and giving freely without expecting anything in return.

Example: Her openhandedness was evident when she donated a large sum to the charity.

Definition: A space or gap that allows access or passage, or the beginning of an event or activity.

Example: The opening of the new park was celebrated with a big ceremony.

Definition: In a way that is clear and not hidden, allowing others to see or know what is happening.

Example: She spoke openly about her feelings during the meeting.

Definition: The quality of being open, allowing access, sharing, or communication without restrictions.

Example: Her openness to new ideas made her a great team leader.

Definition: The ability of a system or device to be used or operated effectively.

Example: The operability of the new software was tested before its release.