1. 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"
   

2. beyond or outside an area of immediate interest; remote;

   "a suggestion ulterior to the present discussion"
   "without...any purpose, immediate or ulterior"
   

3. coming at a subsequent time or stage;

   "without ulterior argument"
   "the mood posterior to"
   

1.（动机等）隐蔽的，隐秘的，隐藏的
If you say that someone has anulterior motive for doing something, you believe that they have a hidden reason for doing it.

e.g. Sheila had anulterior motive for trying to help Stan...
希拉想帮助斯坦是另有所图的。
e.g. Posing for the camera pleased him more than anything else. No doubt with theulterior object of catching votes.
在照相机前摆姿势是最令他高兴的事了，背后的动机无疑是为了拉选票。

1. 在那边的：ulnar 尺骨的 |ulterior 在那边的 |ulteriorly 未表明地

2. 隐秘不明的;别有用心的：tussle 扭打;争斗;争执;争辩 |ulterior 隐秘不明的;别有用心的 | ultimatum 最后通牒

3. 较远的,将来的：bombardment 冲击 |ulterior 较远的,将来的 | predecessor 前辈,前任

4. 未表明于外的：ulster /爱尔兰地名/ |ulterior /未表明于外的/ |ulteriorly /心底下/那边/将来/