na-adjective
contrastive; in contrast; strikingly different
Describes things that are clearly different when compared side by side. Often used in the pattern 〜と対照的だ or 〜とは対照的だ.
兄は社交的だが、弟は対照的に無口だ。
The older brother is sociable, but the younger brother is, in contrast, quiet.
彼
His opinion was in stark contrast to mine.