(s) coming at a subsequent time or stage; "the future president entered college at the age of 16"; "awaiting future actions on the bill"; "later developments"; "without ulterior argument"
(s) beyond or outside an area of immediate interest; remote; "a suggestion ulterior to the present discussion"; "without...any purpose, immediate or ulterior"- G.B.Shaw
(s) lying beyond what is openly revealed or avowed (especially being kept in the background or deliberately concealed); "subterranean motives for murder"; "looked too closely for an ulterior purpose in all knowledge"- Bertrand Russell