1 affair, attempt, business, effort, endeavour, enterprise, game, operation, project, task, venture
2 assurance, commitment, pledge, promise, solemn word, vow, word, word of honour
English Collins Dictionary - English synonyms & Thesaurus
undertaking ( undertakings plural )
1 n-count An undertaking is a task or job, especially a large or difficult one.
Organizing the show has been a massive undertaking.
2 n-count If you give an undertaking to do something, you formally promise to do it.
oft N to-inf
The MOD gave an undertaking to Saville that it had provided him with all relevant material.
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