Boldly
Bravely, Fearlessly
adjective, adverb
かんぜん
完全 （かんぜん） Complete, Perfect, Perfection, Completeness
敢然 （かんぜん） Boldly, Bravely, Fearlessly
大胆 （だいたん） Bold, Daring, Audacious
果敢 （かかん） Resolute, Determined, Bold, Daring
然 often makes things into adverbs, hence the -ly ending.