Other types of adverbs have other forms of comparative and superlatives, and can be somewhat irregular.
godt / bra (well) ille / dårlig (poorly) |
bedre (better) verre (worse) |
best (best) verst (worst) |
mye (much) lite (little) |
mer (more) mindre (less) |
mest (most) minst (least) |
gjerne (gladly) lenge (a long time) |
heller (rather) lenger (a longer time) |
helst (most preferably) lengst (the longest time) |
langt (far) nær (near) |
lenger (farther) nærmere (nearer) |
lengst (farthest) nærmest (nearest) |