how to translate the idiom 阴阳怪气?
eerie
strange in a frightening and mysterious way

阴阳怪气 describe &quot;an unnatural tone or vibe&quot; (doesn't sound/ feel like male or female)  I would translate it as &quot;eerie vibe&quot;
说话阴阳怪气 could be translated as &quot;talk with an eerie voice&quot;
这人阴阳怪气  could be translated as &quot;this man projects an eerie vibe&quot;