noun
sforzando; sforzato
A musical direction indicating a sudden, strong accent on a note or chord. Used in classical music notation and discussion.
from Italian
この楽譜のスフォルツァンドの部分を強調して演奏してください。
Please play the sforzando passages in this score with emphasis.
アクセント is a general term for accent in music or language, while スフォルツァンド specifically refers to a sudden, forceful accent as a musical instruction.
Borrowed from Italian sforzando, the gerund of sforzare ('to force').