godan verb (-su), transitive verb
Used when someone deliberately makes a statement, boundary, or image unclear or vague. Often implies intentional vagueness to avoid commitment or to soften a point. Related to 暈す (ぼかす) for visual blurring, but ぼやかす is more about abstract ambiguity.
See also: 暈す
彼は都合が悪くなると話をぼやかす。
He makes his story ambiguous when it becomes inconvenient.
The politician blurred the answer to the question.