- 激しい【はげしい】 - violent, furious, tempestuous, extreme, intense, fierce, strong, fervent, vehement, incessant, relentless, precipitous, steep 
- 刺激【しげき】 - stimulus, stimulation, irritation (esp. of the body, e.g. skin, eyes), impetus, impulse, stimulus, spur, incentive, encouragement, stimulation, motivation, provocation, excitement, thrill 
- 激突【げきとつ】 - crash, smashing (into), ramming, (violent) collision, clash (of views, interests, teams, etc.), conflict 
- 感激【かんげき】 - deep emotion, impression, inspiration 
- 過激【かげき】 - extreme, radical 
- 激怒【げきど】 - rage, fury 
- 急激【きゅうげき】 - sudden, abrupt, rapid, sharp, drastic, radical 
- 激動【げきどう】 - violent shock, agitation, turbulence, turmoil, upheaval, excitement 
- 激励【げきれい】 - encouragement, spurring (on), cheering (on) 
- 刺激的【しげきてき】 - stimulating, exciting, provocative 
- 激甚【げきじん】 - intenseness, violence, severity, vehemence, keenness 
- 激戦【げきせん】 - fierce battle, hard-fought battle, hot contest, severe fight 
- 激流【げきりゅう】 - raging stream, rapids 
- 激化【げきか】 - intensification, aggravation 
- 激変【げきへん】 - sudden change, upheaval 
- 激論【げきろん】 - heated argument, heated discussion, heated debate 
- 激情【げきじょう】 - violent emotion, passion, fury 
- 激減【げきげん】 - dramatic decrease, sharp drop, sudden fall 
- 激烈【げきれつ】 - violence, vehemence, fury, fervour, fervor, severity, fierceness, keenness 
- 激震【げきしん】 - severe earthquake, violent tremor