What is a synonym for large?

Here are some synonyms for "large," depending on the context:

General Size:

* Big

* Huge

* Vast

* Extensive

* Immense

* Gigantic

* Mammoth

* Colossal

* Substantial

* Considerable

* Significant

* Ample

* Bountiful

Specific Size:

* Height: Tall, lofty, towering

* Width: Wide, broad

* Depth: Deep, profound

* Quantity: Numerous, plentiful, abundant, copious

Other:

* Weight: Heavy, weighty

* Scale: Grand, majestic, impressive

* Scope: Comprehensive, wide-ranging

* Impact: Powerful, influential

The best synonym to use will depend on the specific context and the nuance you want to convey.