Question

what's a different word for big

Answer 1

Here are some alternatives to "big," grouped by tone/intensity so you can pick the best fit:

- Mild/neutral: large, sizable, substantial, ample
- Strong/very large: huge, enormous, massive, immense, colossal, gigantic, mammoth, vast
- Informal/slang: biggie, jumbo, ginormous, humongous
- Formal/precise: considerable, extensive, significant
- Spatial: roomy, spacious, broad
- Figurative/importance: major, important, weighty

If you give the sentence or context, I can suggest the single best replacement.