This is the 261st most frequent Japanese word.
なんと
"How...!," "What...!," or "Oh my!" (used to express surprise or amazement).
In this sentence, 'なんと' is used to express astonishment or admiration, highlighting the speaker's reaction to the beauty of the flower.
なんと美しい花だろう！
What a beautiful flower!
Here, 'なんと' emphasizes the surprising or impressive nature of the achievement, showing the speaker's amazement.
彼はなんと世界記録を破った。
He broke the world record, surprisingly.
In this context, 'なんと' expresses disbelief or incredulity, underscoring the speaker's amazement at the fact.