Adverbs ending in -YFor adjectives that end in -y, we remove the -y and add -ily:
crazy  -  crazily 
happy  -  happily
Adverbs ending in -LE
For adjectives that end in a consonant + le we remove the -e and add -y:
terrible  -  terribly 
horrible  -  horribly
noble  -  nobly
idle -  idly
 Adverbs ending in -IC
If the adjective ends in -ic, we add -ally:
ironic  -  ironically
enthusiastic  -  enthusiastically
realistic  -  realistically
Except: public  -  publicly
Irregular Adverbs
Some adverbs are irregular: