marching up to the cannon's mouth (verb) run the gauntlet: go through an ordeal
Sinonime: all skin and bones, angular, attenuate, attenuated, beanpole, beanstalk, bony, cadaverous, delicate, emaciated, ethereal, featherweight, fleshless, fragile, gangling, gangly, gaunt, haggard, lank, lanky, lean, lightweight, meager, narrow, peaked, pinched, pole, puny, rangy, rarefied, rawboned, reedy, rickety, scraggy, scrawny, shadow, shriveled, skeletal, skinny, slender, slight, slim, slinky, small, spare, spindly, stalky, starved, stick*, stilt, subtle, thin as a rail, threadlike, twiglike, undernourished, underweight, wan, wasted*, weedy, wizened