stiffest

adjective

1. 1

   (of an object) Rigid; hard to bend; inflexible.

2. 2

   (of policies and rules and their application and enforcement) Inflexible; rigid.

3. 3

   (of a person) Formal in behavior; unrelaxed.

4. 4

   Harsh, severe.

   “He was eventually caught, and given a stiff fine.”

5. 5

   (of muscles or parts of the body) Painful as a result of excessive or unaccustomed exercise.

   “My legs are stiff after climbing that hill yesterday.”

6. 6

   Potent.

   “a stiff drink; a stiff dose; a stiff breeze.”

7. 7

   Dead, deceased.

8. 8

   (of a penis) Erect.

9. 9

   (of whipping cream or egg whites) Beaten until so aerated that they stand up straight on their own.

   “beat the egg whites until they are stiff”

10. 10

    Of an equation: for which certain numerical solving methods are numerically unstable, unless the step size is taken to be extremely small.

11. 11

    Keeping upright.