Lesson 170 — Academic Word List: Lesson 20

Part 1: Watch the video 2-3 times

Part 2: Match the Words with their Definitions

a. to make someone feel very unhappy or discouraged.
b. to obtain something from a source or origin.
c. to discover or identify the presence of something using senses or technology.
d. to indicate or represent something specific, often by a symbol or sign.
e. to show how something works or is done through actions or examples.
f. to plan and create something with a specific purpose or intention in mind.
g. without being affected or influenced by something; regardless of.
h. clearly stated or decided; not vague or uncertain.
i. to explain the meaning of something clearly and accurately.
j. to refuse to admit the truth or existence of something.


  1. despite
  2. detect
  3. derive
  4. denote
  5. deny
  6. design
  7. demonstrate
  8. definite
  9. depress
  10. define

Correct matches:

  1. g
  2. c
  3. b
  4. d
  5. j
  6. f
  7. e
  8. h
  9. a
  10. i

Part 3: Vocabulary in Context: Sentences

  1. The professor asked the students to define the concept of existentialism in their essays.
  2. There is a definite connection between exercise and improved cognitive function.
  3. The scientist was able to demonstrate the chemical reaction through a series of experiments.
  4. In mathematical equations, “x” is often used to denote an unknown variable.
  5. The suspect continued to deny any involvement in the crime despite the evidence against him.
  6. Chronic stress can depress the immune system, making individuals more susceptible to illness.
  7. The researchers were able to derive important conclusions from the data collected during the study.
  8. The architect was hired to design a new sustainable office building for the company.
  9. Despite his busy schedule, he always finds time to volunteer at the local shelter.
  10. The security system was able to detect intruders before they could gain access to the building.

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