house of cards
breakers ahead, bubble, cambric tea, cardhouse, cause for alarm, china, cobweb, crisis, danger, dangerous ground, dishwater, eggshell, emergency, endangerment, gaping chasm, gathering clouds, glass, glass house, gossamer, gruel, hair, hazard, ice, imperilment, jeopardy, matchwood, menace, milk and water, old paper, parchment, pass, peril, piecrust, pinch, plight, predicament, quicksand, reed, risk, rocks ahead, rope of sand, sand castle, storm clouds, strait, thin ice, thread, threat, water
house of cards
weakness, debility, atony, relaxation, languor, enervation, impotence, infirmity, effeminacy, feminality, fragility, flaccidity, inactivity, anaemia, bloodlessness, deficiency of blood, poverty of blood, declension of strength, loss of strength, failure of strength, delicacy, invalidation, decrepitude, asthenia, adynamy, cachexy, cachexia, sprain, strain, reed, thread, rope of sand, house of cards
, softling, weakling, infant, youth, weak, feeble, debile, impotent, relaxed, unnerved sapless, strengthless, powerless, weakly, unstrung, flaccid, adynamic, asthenic, nervous, soft, effeminate, feminate, womanly, frail, fragile, shattery, flimsy, unsubstantial, insubstantial, gimcrack, gingerbread, rickety, creaky, creaking, cranky, craichy, drooping, tottering, broken, lame, withered, shattered, shaken, crazy, shaky, palsied, decrepit, languid, poor, infirm, faint, faintish, sickly, dull, slack, evanid, spent, short-winded, effete, weather-beaten, decayed, rotten, worn, seedy, languishing, wasted, washy, laid low, pulled down, the worse for wear, unstrengthened, unsupported, unaided, unassisted, aidless, defenseless, cantilevered (support), on its last legs, weak as a child, weak as a baby, weak as a chicken, weak as a cat, weak as a rat, weak as water, weak as water gruel, weak as gingerbread, weak as milk and water, colorless, non sum qualis eram.
brittleness, fragility, friability, frangibility, fissibility, house of cards
, house of glass, brittle, brash, breakable, weak, frangible, fragile, frail, gimcrack, shivery, fissile, splitting, lacerable, splintery, crisp, crimp, short, brittle as glass.