English Reference

Word

undertook

Phoneticsun·der·took

US/ˌəndɝˈtʊk/

UK/ˌʌndətˈʊk/

Definition

v. started a task or a job, especially one that takes a long time or is difficult.

v. the past tense of 'undertake'; refers to having committed oneself to and begun a specific task, responsibility, or journey.

Examples

“She undertook the difficult task of cleaning the entire house.”

“The university undertook a massive renovation project to modernize the science labs before the new semester.”

“The explorers undertook a perilous journey across the frozen tundra, knowing that their supplies would barely last until they reached the coastal outpost.”

Examples

simple

“She undertook the difficult task of cleaning the entire house.”

contextual

“The university undertook a massive renovation project to modernize the science labs before the new semester.”

complex

“The explorers undertook a perilous journey across the frozen tundra, knowing that their supplies would barely last until they reached the coastal outpost.”

Usage

Transitive; requires a direct object representing the task or responsibility.

Pitfall

He has undertook the work

He has undertaken the work

Learners often confuse the past tense 'undertook' with the past participle 'undertaken' in perfect tenses.

Real-World Examples

“In all, he undertook more than 70 operatic roles in performances throughout Britain and Europe.”
The Guardian · 20 Sept 2026
“He also undertook a test when he returned to Italy which was negative, his club side Sassuolo said.”
The Guardian · 9 Sept 2026

This entry

Level
B2 · Upper Intermediate
Frequency
Frequent
Updated

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English Reference