Exam: TOEFL

Definition: The state of having problems or challenges that make something hard to do or understand.

Example: She faced great difficulty in solving the complex math problem.

Definition: The quality of being shy or lacking confidence in oneself.

Example: Her diffidence made it hard for her to speak in front of the class.

Definition: Someone who is shy and lacks confidence in themselves, often feeling unsure about their abilities or opinions.

Example: Despite her talent, she remained diffident during the presentation, hardly speaking up.

Definition: In a way that shows a lack of self-confidence or shyness.

Example: She spoke diffidently during the meeting, unsure of her ideas.

Definition: To cause a wave, such as light or sound, to change direction as it passes through an opening or around an obstacle.

Example: The scientist used a prism to diffract the light into a spectrum of colors.

Definition: The bending and spreading of waves, such as light or sound, when they pass around an obstacle or through a narrow opening.

Example: The diffraction of light through a prism creates a beautiful spectrum of colors.

Definition: Describing something that is spread out over a large area or not concentrated in one place. It can also refer to language that is overly wordy or not clear.

Example: The author's writing style was diffuse, making it hard to follow the main point.

Definition: To spread out or become widely distributed in different directions.

Example: The scent of the flowers began to diffuse through the air.

Definition: To cause something to spread out or become less concentrated.

Example: The scientist used a fan to diffuse the scent of the perfume throughout the room.

Definition: In a way that spreads out or is not concentrated in one area.

Example: The light from the lamp spread diffusely across the room, creating a soft glow.

Definition: The process by which particles spread out from an area of high concentration to an area of low concentration, often occurring in gases and liquids.

Example: The diffusion of perfume in the air can be noticed even from a distance.

Definition: Relating to the process of spreading out or mixing substances, especially in a fluid or gas.

Example: The diffusional process is essential for understanding how gases exchange in the lungs.