どうにかなってしまう
dō ni ka natte shimau
JA
To end up somehow, to get done without much effort, to turn out in an undesired unplanned way
このまま放っておいたら悪い結果にどうにかなってしまうよ。
If we leave it like this, it will end up with a bad result.
Etymology
It is a grammatical phrase made from the verb なる (to become) combined with the て form of にか and the auxilliary verb しまう, which indicates completion of an action often with a sense of finality or regret. It developed its common conversational use in modern Japanese.
Memory Aid
Break it down: どうにか (somehow) + なってしまう (ends up happening) = ends up happening somehow. Think of 'somehow it just got done' to remember the meaning.
Collocations
悪い結果にどうにかなってしまうこのままどうにかなってしまう
Synonyms
どうにかなるなってしまう
Related Words
どうにかするしまうなる