vehement (adj.)
- abandoned
- acid
- acidulous
- acrid
- acrimonious
- acute
- afire
- ardent
- assiduous
- astringent
- biting
- bitter
- burning
- caustic
- committed
- concentrated
- cutting
- dedicated
- delirious
- desperate
- devoted
- devout
- diligent
- double-edged
- drastic
- earnest
- edged
- emphatic
- energetic
- enthusiastic
- excessive
- exciting
- exorbitant
- exquisite
- extravagant
- extreme
- faithful
- fervent
- fervid
- fierce
- fiery
- flaming
- forceful
- frantic
- furious
- glowing
- great
- hard
- hardworking
- harsh
- hearty
- heated
- hot
- hot-blooded
- hotheaded
- immoderate
- impassioned
- impetuous
- incisive
- indefatigable
- industrious
- intemperate
- intense
- intent
- keen
- laborious
- lively
- loyal
- mordacious
- mordant
- outrageous
- passionate
- penetrating
- perfervid
- piercing
- poignant
- potent
- powerful
- pronounced
- provoking
- rabid
- red-hot
- relentless
- resolute
- rigorous
- rough
- scathing
- sedulous
- serious
- severe
- sharp
- sincere
- sleepless
- spirited
- splitting
- stabbing
- stimulating
- stinging
- stirring
- stormy
- strenuous
- strident
- stringent
- tart
- tempestuous
- terrible
- tireless
- trenchant
- unconscionable
- unflagging
- unremitting
- unsleeping
- unsparing
- unwearied
- urgent
- venomous
- vicious
- violent
- virulent
- vitriolic
- volcanic
- warm
- white-hot
- wild
- zealous
