Adverbs derived from adjectives form degrees of comparison just like the adjectives: the comparative ends in -āk and the superlative adds vis-.
| Positive | Comparative | Superlative |
|---|---|---|
| labi | labāk | vislabāk |
| ātri | ātrāk | visātrāk |
| bieži | biežāk | visbiežāk |
Viņš skrien ātrāk par mani.
He runs faster than me.