na-adjective, noun
euphemistic; indirect; roundabout
Describes speech or expression that avoids directness, often to soften a statement or be polite. Commonly used in phrases like 婉曲な表現 (euphemistic expression) or 婉曲に言う (to say indirectly).
彼は婉曲な言い方で断った。
He declined in a roundabout way.
婉曲に
To put it indirectly, the plan is not very realistic.