invincible (adj.)
- assiduous
- calculable
- constant
- continuing
- deathless
- dependable
- diligent
- dogged
- enduring
- faithful
- fast
- firm
- immortal
- immutable
- impassable
- impenetrable
- imperishable
- impregnable
- inalterable
- incomparable
- incontestable
- incorruptible
- indefatigable
- indelible
- indestructible
- indomitable
- industrious
- ineradicable
- inexpugnable
- inextinguishable
- inimitable
- insistent
- insuperable
- insurmountable
- inviolable
- invulnerable
- irresistible
- lasting
- loyal
- matchless
- obstinate
- overpowering
- overwhelming
- patient
- peerless
- permanent
- persevering
- persistent
- persisting
- pertinacious
- plodding
- predictable
- preoccupied
- quenchless
- rapt
- relentless
- reliable
- resistless
- resolute
- secure
- sedulous
- single-minded
- sleepless
- solid
- sound
- stable
- staunch
- steadfast
- steady
- stubborn
- substantial
- sure
- tenacious
- tireless
- trustworthy
- trusty
- unapproachable
- unassailable
- unattackable
- unbeatable
- unconquerable
- undaunted
- undefeated
- undestroyable
- undiscouraged
- undying
- unequaled
- unexampled
- unexcelled
- unfailing
- unfaltering
- unflagging
- unflinching
- uninterrupted
- unique
- unmatchable
- unmatched
- unparalleled
- unquenchable
- unrelenting
- unremitting
- unrivaled
- unsleeping
- unstoppable
- unsubduable
- unsurmountable
- unsurpassable
- unsurpassed
- unswerving
- untiring
- untouchable
- unwavering
- unwearied
- unwearying
- unyielding
- well-founded
- well-grounded
Zealous, yet modest; innocent, though free;
Patient of toil, serene amidst alarms;
Inflexible in faith, invincible in arms.
Methinks I see in my mind a noble and puissant nation rousing herself like a strong man after sleep, and shaking her invincible locks; methinks I see her as an eagle mewing her mighty youth, and kindling her undazzled eyes at the full midday beam.
