unsupple

arthritic creaky rigid solid stark tense thick tight wooden

brittle buckram firm refractory rheumatic set

annealed benumbed cemented chilled congealed contracted fixed frozen graceless hardened immalleable impliable incompliant indurate inelastic jelled mechanical numbed ossified petrified resistant solidified starched starchy steely stiff as a board stony taut thickened unbending unflexible ungraceful unyielding

bending flexible loose pliable slack soft

indefinite supple

pliant