Undermine vs Weaken
When to use each in English, with meaning, register, and examples.
Undermine
Top 2,000 (common)C1verb
Weaken
Top 2,000 (common)C1verb
| Undermine | Weaken | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/ˌʌndəˈmaɪn/","/ˌʌndəˈmaɪnz/","/ˌʌndəˈmaɪnd/","/ˌʌndəˈmaɪnɪŋ/"]/🇺🇸 /["/ˌʌndərˈmaɪn/","/ˌʌndərˈmaɪnz/","/ˌʌndərˈmaɪnd/","/ˌʌndərˈmaɪnɪŋ/"]/ | 🇬🇧 /["/ˈwiːkən/","/ˈwiːkənz/","/ˈwiːkənd/","/ˈwiːkənɪŋ/"]/🇺🇸 /["/ˈwiːkən/","/ˈwiːkənz/","/ˈwiːkənd/","/ˈwiːkənɪŋ/"]/ |
| Meaning | To weaken or damage something gradually. | to make something less strong or less powerful |
| Example | Our confidence in the team has been seriously undermined by their recent defeats. | The constant stress at work began to weaken her resolve. |
| Register | Neutral | Neutral |
| How common | Top 2,000 (common) | Top 2,000 (common) |
| CEFR level | C1 | C1 |
| Part of speech | verb | verb |
| Collocations | greatly, radically, seriously, threaten to, attempt to, seek to | considerably, greatly, seriously, begin to, start to, continue to, considerably, greatly, seriously, begin to, start to, continue to |
| Antonyms | strengthen, support | strengthen, fortify, enhance |
| Common mistakes | Confused with 'undermine' vs 'undermine'., Using the wrong tense, like 'undermined' when it should be 'undermine'., Misplacing the object, saying 'undermine to group' instead of 'undermine the group'. | Confused with 'weak' used as an adjective., Used in the wrong tense, like saying 'weakened' when 'weaken' is intended., Forgetting the object; saying 'weaken' without describing what is weakened. |
| Usage notes | Typically used in both formal and neutral contexts. Avoid in casual conversations as it may sound overly serious. Often used in discussions about relationships, authority, or systems. | Use 'weaken' in contexts where something's strength is reduced, like a person's health or a structure's stability. Avoid in very technical or scientific discussions where more specific terms are preferred. |
Frequently asked questions: Undermine vs Weaken
What's the difference between Undermine and Weaken?
Undermine: To weaken or damage something gradually. Weaken: to make something less strong or less powerful
Are Undermine and Weaken the same CEFR level?
Undermine: C1, Weaken: C1 on the CEFR scale.
What part of speech are Undermine and Weaken?
Undermine: verb, Weaken: verb.
Can you show an example of each?
Undermine: Our confidence in the team has been seriously undermined by their recent defeats. Weaken: The constant stress at work began to weaken her resolve.
Can I use Undermine and Weaken interchangeably?
Not always. Undermine and Weaken are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.