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