noun
great speed; recklessly fast speed
Emphasizes speed that is dangerously or impressively fast, often with a nuance of recklessness. Used in contexts like driving, running, or rapid progress.
彼は猛スピードで走り去った。
He ran away at a reckless speed.
車が猛スピードでカーブを曲がった。
The car took the curve at a terrifying speed.
高速 is a neutral term for high speed, often used in technical or formal contexts (e.g., 高速道路). 猛スピード adds a subjective, dramatic nuance of reckless or breakneck speed.
スピード is the general loanword for 'speed'. 猛スピード intensifies it with the prefix 猛 (fierce, violent), implying excessive or dangerous speed.
Compound of 猛 (もう, 'fierce, violent') and the loanword スピード ('speed'). The prefix 猛 intensifies the noun to convey extreme or reckless speed.