What is deleterious? Pronunciation and usage in English

deleterious means . Learn how to pronounce and use deleterious through vivid examples and easy-to-understand exercises.

Definition & pronunciation of deleterious

deleteriousadjective

/ˌdeləˈtɪəriəs//ˌdeləˈtɪriəs/

Okay, let's break down how to pronounce "deleterious." It's a tricky one! Here's a breakdown, aiming for a natural-sounding pronunciation:

1. Segmenting the word:

  • de-: Like "dee" (as in "deep")
  • le-: Like "le" (as in "lovely")
  • ter-: Like "ter" (as in "term")
  • i-: Like "ee" (as in "see")
  • -ous: Like "us" (as in "bus")

2. Putting it together (with emphasis):

The general flow is: dee-leh-TER-ee-us

Let's break down the emphasis:

  • TER – This syllable is the most important and needs to be stressed. It’s the core of the word. Pronounce it with a clear "ter" sound, almost like "tar."
  • dee-leh – These syllables are softer and flow into each other.

3. A rough audio guide (since I can't actually speak here):

You can search online for the pronunciation on sites like:

Tips for getting it right:

  • The "ter" sound: This is the key. Make sure it’s a distinct "ter" sound, not just "te."
  • Smooth transitions: Don’t chop the word up; flow smoothly between the syllables.
  • Practice: Saying it multiple times will help you get the rhythm and emphasis correct.

Would you like me to:

  • Break down any specific part of the pronunciation further?
  • Give you some example sentences using the word?

Usage and examples with the word deleterious in English

Let's break down how to use the word "deleterious" correctly. It's a pretty sophisticated word, so it's good to understand its nuances.

1. Definition:

  • Deleterious means harmful, damaging, or destructive. It implies a subtle, often gradual, negative effect. It's stronger than just "bad" or "harmful," suggesting something that's actively working to degrade or ruin.

2. Part of Speech & Usage:

  • Adjective: This is its primary use. You'll typically use it to describe something that causes harm.
    • “The prolonged exposure to the toxin was deleterious to his health.”
    • “Excessive sugar intake can have deleterious effects on your cardiovascular system.”
    • “The chemical runoff proved deleterious to the local ecosystem.”

3. Synonyms (to help you understand the shades of meaning):

  • Harmful
  • Detrimental
  • Injurious
  • Noxious
  • Poisonous
  • Damaging
  • Destructive
  • Unhealthy

4. When to Use It (vs. Simpler Words):

  • Subtlety: “Deleterious” is best used when the harm isn't immediately obvious or dramatic. It suggests a slow, creeping danger. If something is instantly and obviously harmful, “harmful” or “damaging” is usually better.
  • Formal Tone: The word is more formal than “bad.” It’s appropriate for academic writing, scientific reports, and other situations where a precise and measured tone is desired.
  • Emphasis on Damage: It emphasizes the damage being done, rather than simply stating that something is unpleasant.

5. Examples in Sentences (showing different contexts):

  • Medicine/Health: "The doctor warned that the medication could be deleterious to the liver if taken in high doses."
  • Environment: “Pollution is a deleterious influence on the planet’s biodiversity.”
  • Psychology: “Chronic stress can have a deleterious impact on mental well-being.”
  • Food: “Some additives in processed foods can be deleterious to gut health.”
  • History/Social Sciences: “The policies of the regime proved deleterious to the country’s economic development.”

6. Important Note: Spelling & Pronunciation

  • Spelling: It's crucial to spell it correctly: "deleterious," not "deleterious."
  • Pronunciation: It's pronounced /ˌdɪˈlɪtərəs/ (dee-LE-teh-rus). The stress is on the second syllable.

Resources for Further Learning:

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  • Help you practice using the word in a sentence?
  • Explain how it differs from a similar word (e.g., "harmful")?

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