suddenly suddenly /ˈsʌdənli/

adverb

1. () Happening unexpectedly  ( all of a sudden , of a sudden , suddenly )
   happening unexpectedly
    Suddenly she felt a sharp pain in her side
   suddenly she felt a sharp pain in her side
   
2. () Quickly and without warning  ( dead , short , abruptly , suddenly )
   quickly and without warning
    He stopped suddenly
   he stopped suddenly
   
3. () On impulse; without premeditation  ( on the spur of the moment , suddenly )
   on impulse; without premeditation
    He decided to go to Chicago on the spur of the moment
   he decided to go to Chicago on the spur of the moment
    He made up his mind suddenly
   he made up his mind suddenly