adverb, adverb taking the 'to' particle
Used when someone acts or speaks without hesitation, reservation, or beating around the bush. Often implies a direct, sometimes blunt, approach.
彼はずばりと核心を突いた質問をした。
He asked a question that went straight to the heart of the matter.
Frankly speaking, that plan is a failure.
adverb, adverb taking the 'to' particle
Indicates that something hits the mark perfectly, often used when a guess, answer, or description is spot-on.
彼の推測はずばり当たっていた。
His guess was exactly right.
ずばり、それが私の言いたかったことです。
That's precisely what I wanted to say.