激はげしい

激しい focuses on the intensity or force of something (like rain or emotion), whereas 荒々しい adds a sense of coarseness or lack of refinement beyond mere intensity.

激しい stresses intensity or violence of an action or force (like rain or emotion), while 甚だしい stresses that a degree or gap has become extreme, often negatively.

激しい (はげしい) is a common everyday i-adjective meaning 'intense' or 'violent', while 激甚 is a formal, literary equivalent often seen in news or official reports.

激しい stresses sheer intensity of a force or emotion (激しい雨), whereas 荒い adds a sense of roughness or lack of control rather than just strength.

激しい is a common, everyday word for 'intense' or 'violent', but lacks the grand, heroic overtone that 壮絶 has.