Exam: TOEFL

Definition: A deliberate act of betrayal or treachery, often involving a breach of trust.

Example: His perfidy shocked everyone who thought he was a loyal friend.

Definition: A type of chemical compound made by replacing all hydrogen atoms in a hydrocarbon with fluorine atoms.

Example: Perfluorocarbons are used in various applications, including as blood substitutes in medical treatments.

Definition: Having holes or openings made in something, often for the purpose of allowing it to be torn or separated easily.

Example: The perforated paper made it easy to tear off each page.

Definition: To go through or make a hole in something.

Example: The bullet perforated the wall.

Definition: To make a hole or holes in something, usually by piercing or stamping.

Example: The machine can perforate the paper to make it easier to tear along the lines.

Definition: Describing something that has holes or openings, often arranged in a pattern, such as in paper or metal.

Example: The perforated paper made it easy to tear off the sheets.

Definition: A hole or a series of holes made by piercing or boring through a material, often used to separate sections in a sheet or roll.

Example: The document had several perforations along the edge to make it easier to tear off sections.

Definition: To carry out an action or task, especially in front of an audience, or to function in a particular way.

Example: The magician performed an amazing trick that left everyone in awe.

Definition: To carry out an action or task, especially in front of an audience or as part of a job.

Example: The musician will perform at the concert tonight.

Definition: Capable of being carried out or executed.

Example: The task is performable within the given time frame.

Definition: An event where someone shows their skills or talents to an audience, like acting, singing, or dancing.

Example: The performance of the play was outstanding and received a standing ovation.

Definition: Describing something that performs an action or creates a situation simply by being said or done, often in a formal or conventional context.

Example: The performative nature of the wedding vows made the ceremony feel even more special.

Definition: A statement or expression that performs an action rather than just conveying information, often used in linguistics and philosophy.

Example: In linguistics, a promise is an example of a performative because it creates an obligation when spoken.

Definition: A person who entertains others by acting, singing, dancing, or doing other performances.

Example: The performer captivated the audience with her amazing dance routine.