adverbs 2

Adverbs formed from adjectives ending in -le
If the adjective ends in -le, drop the -e, and replace it with -y:
terrible – terribly

Adverbs formed from adjectives ending in -e
If the adjective ends in -e, then add -ly:
safe - safely

NB: Not all words ending in -ly are adverbs:

NB 2: There is no separate adverb for an adjective already ending in -ly.

Irregular forms
There are some irregular forms, where the adverb differs from the adjective.

Other irregular forms show no difference between the adjective and the adverb.

adjective aaadverb
good well
fast fast
hard hard