When something is stiff, it is not flexible or elastic. This can often happen when something is frozen or when it is dried out.

  • The fabric was stiff and difficult to move.

  • The flowers were stiff and difficult to move.

Definition of stiffen


severely restrict in scope or extent


constrain, tighten, tighten up


become stiff or stiffer


make stiff or stiffer

Nearby Words

stiffen Pronunciation in a video

Example Sentences for stiffen

  • 1

    The muscle is stiffening slowly.

  • 2

    I lay on the bed and the calf muscles began to stiffen and jerk.

  • 3

    Why does it stiffen

  • 4

    The ribs also serve to stiffen the tray.

  • 5

    A stiffener in the appendage contributes to lifelike movement of the appendage.

  • 6

    After a long time, it starts to stiffen slowly.

  • 7

    The epipubic bones act as levers to stiffen the trunk.

  • 8

    Wax can be used to stiffen the front of the flattop.

  • 9

    At the beginning of the second quarter, the Hokies' defense began to stiffen.

  • 10

    As the bud stage ends, the stem stiffens and the blooming stage is reached.