over-indulgency
/ˌəʊv(ə)rɪnˈdʌl(d)ʒ(ə)nsi/rare
noun
Excessive indulgence; an act of overindulgence.
Origin
Mid 17th century; earliest use found in John Donne (1572–1631), poet and Church of England clergyman. From over- + indulgency. Compare later overindulgence.