Someday - adverb. at an indefinite time in the future.
Jednou. En dag. Op een day. Un giorno. Jonakin paivana. Un jour. Eines Tages. En vakker dag. Algun dia. En dag. Raz. No matter the language, someday is a hopeful word and a depressing word.
Someday Someway (Marshall Crenshaw), Someday We'll be Together (Supremes), Someday My Prince will Come (Disney), Someday Someway (Jeff Healy Band), Maybe Someday (Great White).
When my son was little (around 4 or 5 years old), we went shopping one day. He started selecting little girls clothes. I asked him who those items were for. His response "My baby sister". I replied "You don't have a baby sister". He replied, "Someday I will".