indulge

Concise Oxford English Dictionary © 2008 Oxford University Press:
indulge/ɪnˈdʌlʤ/

▶verb

• 1 (indulge in) allow oneself to enjoy the pleasure of.

  ■ become involved in (an activity that is undesirable or disapproved of).

• 2 satisfy or yield freely to (a desire or interest).

  ■ allow (someone) to enjoy a desired pleasure.

– derivatives
indulger noun.

– origin C17 (earlier (ME) as indulgence), in the sense ‘treat with excessive kindness’: from L. indulgere ‘give free rein to’.