His fierce fighting overwhelmed the enemy.
He had a savage temperament and could not be stopped by anyone.
獰猛 means 'ferocious' and is often used for animals or brutal people, whereas 剽悍 can apply to human daring and fierceness in battle or spirit.
unmatched fierceness and agility
Standard kanji form for this word.
Rare variant kanji form.
The word is composed of 剽 (ひょう, 'swift' or 'agile') and 悍 (かん, 'fierce' or 'wild'). The exact historical derivation is uncertain, but the combination suggests a swift and fierce nature.