euphemistic and circumlocutory
A yojijukugo describing speech or writing that is indirect, roundabout, and avoids stating things bluntly. Often used in formal or literary contexts.
His explanation was so euphemistic and circumlocutory that I couldn't really tell what he wanted to say.
婉曲 alone means 'euphemistic' or 'indirect', while 婉曲迂遠 adds the nuance of being long-winded and roundabout.
迂遠 alone means 'roundabout' or 'circuitous', but 婉曲迂遠 combines it with euphemism to describe indirect and evasive language.
A yojijukugo combining 婉曲 (euphemistic, indirect) and 迂遠 (roundabout, circuitous). The exact historical derivation is uncertain, but the compound is used to describe excessively indirect speech.