Know Your Enemy
In this instance, the appalling suicide attack by the inconspicuous cargo vessels was an extremely ruthless, yet effective method to do just that.
Tangled Vines - Chapter 1
Although petite by mûr tua'ansa standards, lady nemi-mer'ana was well known in government circles as being deceptively sweet and charming, strong willed, calculating, and ruthless when necessary.
Not Too Distant Memories
It wasn't every day that one talked with an alien from another world, let alone one that displayed ruthlessness and kindness in equal measure. "no, just some old memories...painful one."
Mark of Loyalty
ruthlessly efficient, he was able to bend the rules where needed to achieve results that made the kingdom of air a better place. good thing he was not a female, lest he could perhaps even pose a threat to her.
Red Moon: Revolution Chapter 8
While the werewolves thought of them as monsters, they weren't as ruthless as they would make them out to be. "c'mon, just one step into the open." she had her sights on the spot that she had seen the other man was.
Twokinds: Trust
They're not ruthless enough to hurt a helpless prisoner." rather cold comfort, that. the silence stretched for a moment, as keith reached for something to say. his eyes strayed again to the object in natani's lap. "what do you have there?"
The Evolutionary Emergence
The exact essence of two differently evolutionary forms exquisitely blends cowardice bluff meets with brute strength where a predatory neighbours curiosity leads to all straightforward instinct as insanity is exploration to find existence knowing a ruthlessness
In Serpent's Embrace: Chapter 4-Intersteller Academic Quiz Bowl Pt 3
She is quite cunning and ruthless, which is why she is considered top of her profession.
ROI: The Pale Snow - Chapter 1
Over two thousand giants in white armour descended into the red horde and butchered them, one and all, with ruthless efficiency. this was the turning point in the war that saved the empire from the vile clutches of the burgundy ascendance.
Lykos Redemption Ch. 1
These wolves were ruthless and would attack just about anything. it was said that their eyes were burning red with remorse and shame, but their actions were those of wild animals, not thinking, rational creatures.
Umbro the Legendary Umbreon Chapter 1
The rain started to fall from the sky, pounding the forest ruthlessly. the ground quickly turned to mud and small puddles formed with seconds.
The Human Species Ch. 77 - Perky Jester Gallade
How does a kind, harmless student turn into a ruthless killer from a simple blood transfusion?" zoroark asked before giving off a strained shrug, "the short answer is... she doesn't."