firmly in WordNet English dictionary

1. with resolute determination
   "we firmly believed it"; "you must stand firm"
   firm  firmly  steadfastly  unwaveringly  firm  firmly  steadfastly  unwaveringly 
   
2. with firmness
   "held hard to the railing"
   hard  firmly  hard  firmly 
   
3. in a secure manner; in a manner free from danger
   "she held the child securely"
   securely  firmly  securely  firmly