Synonyms of STIFFEST

adjective

1. not moving or operating freely

   • STIFF11

2. powerful

   • STIFF11

3. rigidly formal

   • STARCHY15
   • STIFF11
   • BUCKRAM17

4. having a strong physiological or chemical effect

   • POTENT8
   • STRONG7
   • STIFF11

5. marked by firm determination or resolution; not shakable

   • FIRM9
   • STEADFAST13
   • STEADY10
   • STIFF11
   • UNBENDABLE15
   • UNFALTERING15
   • UNSHAKABLE19
   • UNWAVERING17

6. incapable of or resistant to bending

   • RIGID7
   • STIFF11

7. very drunk

   • BESOTTED11
   • BLOTTO8
   • CROCKED16
   • COCKEYED20
   • FUDDLED13
   • LOADED8
   • PISSED9
   • PIXILATED19
   • PLASTERED12
   • SLOPPED12
   • SLOSHED11
   • SMASHED13
   • SOAKED11
   • SOUSED7
   • SOZZLED26
   • SQUIFFY25
   • STIFF11
   • TIGHT9
   • WET6

   Also: blind drunk, pie-eyed.