ˈmīd.ə(v)ˌbin, -ītə- noun
( plural might-have-beens )
1. : something that might have happened
who can calculate the might-have-beens — W.M.Thackeray
reconstructs the might-have-beens of English and French elections — H.C.Mansfield
2. : a person who might have amounted to something or to more