“Resistance is implacable, intractable, indefatigable.”
“The noise of the herd is tornadic, locomotival. The expression on the hamsters' whiskered faces is businesslike and implacable-it's that implacable-herd expression.”
“Ellie wept for the very intractability of death, its imperviousness to argument.”
“But a young man should be ambitious to shine, and excel; alert, active, and indefatigable in the means of doing it.”
“beware of your most implacable enemy-yourself.”
“Too much of the world was inhospitable, intractable... Why prove that it had ever once been green?”