unequivocal
If you describe someone's attitude as unequivocal, you mean that it is completely clear and very firm.
FORMAL adj
...Richardson's unequivocal commitment to fair play..., Yesterday, the message to him was unequivocal: `Get out.'
♦
unequivocally adv ADV with v, ADV adj
Temperature records have unequivocally confirmed the existence of global warming.