staunchly (adv.)
- consistently
- constantly
- decidedly
- decisively
- determinedly
- devotedly
- earnestly
- faithfully
- firmly
- fixedly
- forcefully
- forcibly
- heartily
- impregnably
- inflexibly
- intensely
- invincibly
- irresistibly
- loudly
- loyally
- lustily
- mightily
- obstinately
- perseveringly
- persistently
- powerfully
- pungently
- purposefully
- relentlessly
- resolutely
- responsibly
- robustly
- ruggedly
- seriously
- sincerely
- soundly
- steadfastly
- steadily
- stoutly
- strongly
- sturdily
- tenaciously
- unswervingly
- vigorously
- wholeheartedly