ଅର୍ଥ : Lying beyond what is openly revealed or avowed (especially being kept in the background or deliberately concealed).
ଉଦାହରଣ :
Subterranean motives for murder.
Looked too closely for an ulterior purpose in all knowledge.
ସମକକ୍ଷ : subterranean, subterraneous
ଅର୍ଥ : Beyond or outside an area of immediate interest. Remote.
ଉଦାହରଣ :
A suggestion ulterior to the present discussion.
Without...any purpose, immediate or ulterior.