Emotionally fragile, easily offended.
Poorly error- or fault-tolerant; having little in the way of redundancy or defense in depth; susceptible to catastrophic failure in the event of a relatively-minor malfunction or deviance.
Diabetes that is characterized by dramatic swings in blood sugar level.
Not physically tough or tenacious; apt to break or crumble when bending.
Said of rocks and minerals with a conchoidal fracture; capable of being knapped or flaked.
Inflexible; liable to break, snap, or shatter easily under stress, pressure, or impact.
A confection of caramelized sugar and nuts.
Anything resembling this confection, such as flapjack, a cereal bar, etc.
To become brittle.
Difficult to accept; unpalatable.
Difficult or impossible to digest.
Anything that is difficult to digest.