best-beloved
/ˌbɛs(t)bɪˈlʌv(ɪ)d/adjective
That is loved best; most beloved.
noun
A most beloved person; specifically a lover, a sweetheart.
- Later sometimes as a form of address with allusion to Rudyard Kipling's Just So Stories..
Origin
Late Middle English. From best + beloved. Compare earlier well-beloved.