Adverbs
A very common way of forming adverbs is by adding the ending '-sti' to the inflecting form of the corresponding adjective:
| Adverbs | |
|---|---|
| Finnish | English |
| 'nopea, nopeasti' | 'quick, quickly' |
| 'kaunis, kauniisti' | 'beautiful, beautifully' |
| 'hidas, hitaasti' | 'slow, slowly' |
| 'helppo, helposti' | 'easy, easily' |
Adverbs are modifying verbs, not nouns, therefore they don't inflect.
Read more about this topic: Finnish Grammar