gutsy (adj.)
- acid
- beefy
- biting
- bold
- bouncing
- corrosive
- courageous
- cutting
- dauntless
- driving
- effective
- forceful
- forcible
- full-blooded
- full-strength
- game
- gamy
- gritty
- hale
- hard
- hardy
- hearty
- hefty
- husky
- imperative
- impressive
- incisive
- intrepid
- lusty
- manful
- manly
- mettlesome
- mighty
- mordant
- nervous
- nervy
- obstinate
- penetrating
- pertinacious
- piercing
- plucky
- poignant
- potent
- powerful
- puissant
- red-blooded
- resolute
- robust
- robustious
- rugged
- sensational
- sinewy
- slashing
- spirited
- spunky
- stalwart
- steely
- stout
- strapping
- striking
- strong
- strong-willed
- sturdy
- telling
- tenacious
- tough
- trenchant
- valiant
- vigorous
- vital