- 2Significato: steadfastresolute untiring unfailing unflagging tireless persistentfirm constant persevering unyielding reliable unfaltering
- 3Significato: determineddiligent assiduous steadfast constantsteady resolute unflagging persevering
- 4Significato: resolutedetermined firm persevering indomitableunyielding unconquerable sturdy
- 5Significato: tenaciousenduring dogged immovable insistentindefatigable persevering persistent