まぎれもない の訳語→ absolute certain certainly decidedly genuine indeed indisputably indubitably inescapable realize really sovereign truly undoubted undoubtedly unfailing unmistakably unquestionable
まぎれもなく の訳語→ absolutely distinctly evidently obviously only sure ultimately
まごうかたない の訳語→ tell-tale undisputed
れっきとした の訳語→ acceptable authentic creditably distinguished good legitimate valid
確実な の訳語→ effective hard positive proven real sure-fire tried-and-true
はっきりと の訳語→ accurate actually articulately clear clearly completely crystal clear decisively deeply directly distinct emphatically exactly expressly fully insistent precisely steady unambiguous unequivocally vividly