Exam: IELTS

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.

Definition: Able to be used or operated; functional and in working condition.

Example: The technician confirmed that the machine is operable and ready for use.

Definition: Relating to something that produces effects or responses, especially in psychology where it refers to behaviors that are influenced by their consequences.

Example: In operant conditioning, behaviors are modified by rewards or punishments.

Definition: A person or thing that performs a function or action, especially in a way that influences the environment or produces a result.

Example: In psychology, an operant is a behavior that is modified by its consequences, such as rewards or punishments.

Definition: In a way that involves behavior that is influenced by the consequences of actions.

Example: The animal learned to press the lever operantly to receive food.