浑然不知

to be totally oblivious (to sth) / to have no idea about sth

muddy / to mix

completely / absolutely / undivided / totally mixed up / muddled

correct / right / so / thus / like this / -ly

no; not so / (bound form) not; un-

not to know / unaware / unknowingly / fig. not to admit (defeat, hardships, tiredness etc)

to know / to be aware