Size:
* Big: A general term for something of considerable size.
* Huge: Emphasizes extreme size, often beyond typical expectations.
* Vast: Implies immense size, often referring to areas or quantities.
* Massive: Similar to "huge," but can also imply weight or density.
* Enormous: Similar to "huge" and "massive," often used for things that are incredibly large.
* Immense: Very large in size or extent.
* Extensive: Used for things that cover a wide area or have many parts.
* Gigantic: Extremely large, often used for things that are impressive or awe-inspiring.
* Colossal: Extremely large in size or scale, often used for things that are impressive and remarkable.
* Monumental: Extremely large and important, often used for things that are significant or lasting.
Other:
* Significant: Important or notable, often used for things that are large in impact or influence.
* Substantial: Large in amount or quantity, often used for things that are tangible or measurable.
* Extensive: Covering a wide area or having many parts.
* Comprehensive: Including everything relevant or necessary.
* Grand: Impressive in size or scale, often used for things that are elaborate or luxurious.
* Magnificent: Impressive and beautiful, often used for things that are awe-inspiring.
* Imposing: Large and impressive, often used for things that are powerful or commanding.
The best alternative to "large" will depend on the specific context of your writing. Consider the tone you want to convey and the specific characteristics of the thing you're describing.