ulterior in WordNet English dictionary

1. coming at a subsequent time or stage
   "without ulterior argument"; "the mood posterior to"
   later  ulterior  posterior 
   
2. 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
   subterranean  subterraneous  ulterior 
   
3. 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
   ulterior