Answer:
distasteful
EXPLANATION
There is no evident connection between all three words given in the question. Therefore we are not looking for a four word, or longer, set or sequence of words.
But there is a direct connection between unscathed and safe. They are a pair of synonyms.
Therefore the question indicates that we are looking for the synonym which completes the second pair of words.
i.e.
1. Safe is a synonym of unscathed.
2. 'x' is a synonym of unsavory.
So what is 'x' ?
'distasteful' is a close synonym of unsavory.
However, unsavory has many synonyms.
It is possible that the original question was supported by a list of options. Distasteful may have been one of them. If not, choose the word closest in meaning to 'unsavory' from the options provided with the original question.