overjoy1
/ˌəʊvəˈdʒɔɪ/Now rare
noun
Excess of joy; extreme joy.
Origin
Early 17th century; earliest use found in John Donne (1572–1631), poet and Church of England clergyman. From over- + joy.
overjoy2
/ˌəʊvəˈdʒɔɪ/verb
[with object] To fill with extreme joy; to transport with joy or gladness.
Origin
Late Middle English (in an earlier sense). From over- + joy.