Synonyms for «enormous undertaking»

The phrase "enormous undertaking" means a very big and difficult task that requires a lot of effort and resources to complete. Full definition

Synonyms for individual words can be found below.

Overseeing this enormous undertaking is Don Iveson. (canadianbusiness.com)
«Every week of prep we made suggestions and changes because we knew it would be such an enormous undertaking.» (businessinsider.com)
We must leave that enormous undertaking to the historians of religion. (religion-online.org)
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