high-intensity
Requiring maximum effort
High-intensity describes activities, experiences, or situations characterized by extreme effort, concentration, or force.
The term appears frequently in fitness contexts—high-intensity interval training—but applies broadly to anything demanding maximum output: a high-intensity work environment, high-intensity combat.
The hyphen is standard when the phrase precedes a noun.
Intensely excessive in force
- passionateIntensely emotional or enthusiastic
- ferventIntensely and sincerely felt
- turbulentViolently agitated or disturbed
- volatileLiable to sudden change
explosive · consuming · visceral · raw · unrelenting · extreme · agitation · outburst
Alternating intense and rest periods
- interval trainingAlternating hard and easy periods
- burpeesSquat-to-jump exercise
- sprintsBrief maximum-speed runs
- cardioPulse-elevating exercise regimen
sweat · exhaustion · heart rate · calories · bootcamp · CrossFit · plyometrics · metabolic
Armed hostile engagement
- warfareArmed conflict between groups
- firefightExchange of gunfire
- escalationProgressive increase in intensity
- bombardmentSustained projectile assault
assault · siege · offensive · skirmish · shelling · airstrikes · violent · brutal
overwhelming
Intensely excessive in force
- passionateIntensely emotional or enthusiastic
- ferventIntensely and sincerely felt
- turbulentViolently agitated or disturbed
volatile · explosive · consuming · visceral · raw · unrelenting · extreme · agitation · outburst · manic
HIIT
Alternating intense and rest periods
- interval trainingAlternating hard and easy periods
- burpeesSquat-to-jump exercise
- sprintsBrief maximum-speed runs
cardio · sweat · exhaustion · heart rate · calories · bootcamp · CrossFit · plyometrics · metabolic · anaerobic
combat
Armed hostile engagement
- warfareArmed conflict between groups
- firefightExchange of gunfire
- escalationProgressive increase in intensity
bombardment · assault · siege · offensive · skirmish · shelling · airstrikes · violent · brutal · relentless
UV
Invisible solar radiation
laser · spotlight · lumens · fluorescent · halogen · radiant · dazzling · brilliant · illumination · harsh
loud
High in volume
- deafeningOverwhelmingly loud
- blaringHarshly loud
- thunderousExtremely loud, resounding
piercing · earsplitting · amplified · decibels · booming · cacophony · roaring · pounding · bass · speakers