WordNet: subterranean, subterraneous, ulterior
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"
- similar to covert
subterranean
- (suomi) maanalainen (synonyymi)
subterraneous
- (suomi) maanalainen (synonyymi)
ulterior
- (suomi) maanalainen (synonyymi)
- (suomi) etäinen (synonyymi)