もうれつ猛烈mouretsu
1.
Describing an intensity or force that greatly exceeds the ordinary, often used to convey a sense of overwhelming energy or passion in actions or conditions.
2.
Characterizing something marked by fierce and vigorous extremes, applying to various contexts such as weather, effort, or enthusiasm.
3.
Indicating a state or quality of being extremely powerful or aggressive, often associated with strong emotions or physical impact.
Example:
警官がやってくるのを見ると彼は猛烈に走り出した。