sluff

/slʌf/
verb
  1. To shed or cast off, such as skin, a layer, or a habit.
    • The tree sluffs its bark in large pieces during the summer.
    • The snake will sluff its skin several times a year.
    • She decided to sluff her old habits and start exercising daily.
  2. To avoid work or responsibility; to shirk or slack off.
    • Don't sluff your duties if you want to keep your job.
    • Some students sluff off their homework and then struggle on tests.
    • He tried to sluff his chores by pretending to be sick.
Antonyms
noun
  1. The skin or outer layer that has been shed or cast off.
    • She found a sluff of bark under the old oak tree.
    • The sluff of the snake lay dried out on the rock.
    • The lizard's sluff was still intact after it molted.