Endeavor vs Undertake
When to use each in English, with meaning, register, and examples.
Endeavor
FormalTop 3,000 (common)B1
Undertake
Top 2,000 (common)B2verb
Most formal: EndeavorMost common: Undertake
| Endeavor | Undertake | |
|---|---|---|
| Pronunciation | 🇬🇧 //ɪnˈdɛv.ər//🇺🇸 //ɪnˈdɛv.ɚ// | 🇬🇧 /["/ˌʌndəˈteɪk/","/ˌʌndəˈteɪks/","/ˌʌndəˈtʊk/","/ˌʌndəˈteɪkən/","/ˌʌndəˈteɪkɪŋ/"]/🇺🇸 /["/ˌʌndərˈteɪk/","/ˌʌndərˈteɪks/","/ˌʌndərˈtʊk/","/ˌʌndərˈteɪkən/","/ˌʌndərˈteɪkɪŋ/"]/ |
| Meaning | To try hard to do something. | To take on a task or responsibility. |
| Example | We will endeavor to meet the project deadline. | to **undertake a task/project** |
| Register | Formal | Neutral |
| How common | Top 3,000 (common) | Top 2,000 (common) |
| CEFR level | B1 | B2 |
| Part of speech | verb | |
| Collocations | make an endeavor, a noble endeavor, personal endeavor | undertake a project, undertake research, undertake responsibilities, undertake an assignment, undertake a task |
| Antonyms | abandon, give up, stop | abandon, neglect, shirk |
| Common mistakes | Confused with 'endeavor' vs 'endeavoured'; not all varieties use the British spelling., Using 'endeavor' without stating what is being endeavored., Incorrectly using 'endeavor' in everyday casual speech. | Confusing with 'take on' — they are similar but context differs., Using 'undertake' without an object — remember to specify what is being undertaken., Incorrect verb forms like 'undertaked' instead of 'undertook' or 'undertaken'. |
| Usage notes | Use in formal contexts, such as academic settings or professional writing. Avoid in casual conversations. | Use 'undertake' for formal or serious tasks. Avoid using it in casual conversations. It’s more common in academic or professional contexts. |
Frequently asked questions: Endeavor vs Undertake
What's the difference between Endeavor and Undertake?
Endeavor: To try hard to do something. Undertake: To take on a task or responsibility.
Which is more formal: Endeavor and Undertake?
Endeavor is the most formal of these.
Which is more common: Endeavor and Undertake?
Undertake is the most common in everyday English.
Which is more advanced: Endeavor and Undertake?
Undertake is the highest level, at B2, on the CEFR scale.
Are Endeavor and Undertake the same CEFR level?
Endeavor: B1, Undertake: B2 on the CEFR scale.
Can you show an example of each?
Endeavor: We will endeavor to meet the project deadline. Undertake: to **undertake a task/project**
Can I use Endeavor and Undertake interchangeably?
Not always. Endeavor and Undertake 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.