-sti

Etymology
Cognate to 🇨🇬.

Suffix

 * hää "good" → hästi "well"
 * uus "new" → uuesti "again"
 * kaunis "beautiful" → kaunisti "beautifully"
 * kerge "easy" → kergesti "easily"
 * kerge "easy" → kergesti "easily"

Etymology
From, probably equivalent to. Cognate to 🇨🇬. For the use of an elative ending to derive such adverbs, compare 🇨🇬,, e.g. in ,.

Usage notes

 * The adverbs are used to describe the manner that something is done; the other common use in English to instead modify adjectives, such as to describe their degree or extent (tolerably quiet, exceptionally cold), is expressed in Finnish by making an adverb out of the adjective using the genitive case.
 * Note the subtle difference:
 * ("exceptionally cold"; so cold that it is exceptional, i.e. it is rarely this cold)
 * ("exceptionally cold"; it is exceptional that it is cold, i.e. it is rarely cold at all)
 * The suffix is appended to the weak stem, i.e. one takes the off the genitive singular form and adds this suffix to it. The resulting adverb is comparable, if the base word is comparable: for example, , . It can be appended to all adjectives, but also to selected nouns and numerals.
 * Used only with small numbers, and with some pronouns; note that →  is not standard Finnish (compare ).
 * The suffix is often applied to a vulgar term: →.
 * The suffix is often applied to a vulgar term: →.