by misadventure

1 不幸

bad poor tough evil rough sticky unfortunate unhappy miserable unsuccessful disastrous unlucky wretched fateful hapless ill-fated accursed untoward calamitous inauspicious luckless ill-starred jinxed infelicitous ill-omened unblest unblessed fortuneless badly-off funest wanchancy unfortunately sadly tragically miserably unhappily unluckily calamitously adverseness ill-being cross trouble blow reverse knock disaster tragedy sorrow misery bale fatality misfortune unhappiness ill jinx misadventure mischance infelicity in an evil hour in an ill hour by mischance hard cheese hard lines but too only too hard luck

2 错误

off wrong false incorrect improper inaccurate bum erroneous amiss errant erring wrongheaded awry improperly falsely mistakenly wrongly erroneously wrongfully error hole mistake slip fault inaccuracy goof boggle impropriety slip-up wrongness clinker brodie inadvertence screwup slipup be in the wrong off beam up the creek in error off the track

3 不幸地

unfortunately sadly tragically miserably unhappily unluckily calamitously in an evil hour in an ill hour

4 错误地

wrong improperly falsely mistakenly wrongly erroneously amiss wrongfully off beam in error