1. With resolute determination
   "we firmly believed it"
   - firm, steadfastly, unwaveringly 
2. In a secure manner; in a manner free from danger
   - securely 
3. With firmness
   - hard

See also: firm

• unaffecting
• unaffectionate
• unaffiliated
• unaffixed
• unaffordable
• unaffordablity
• unafraid
• unaged
• unageing
• unaggressive
• unaging
• unagitated
• unai
• unaided
• unaired
• unairworthy
• unalarming
• unalert
• unalienable
• unaligned
• unalike
• unalloyed
• unalterability
• unalterable
• unalterably