ulterior

• adj.未来の、遠くの、向こうの、不明瞭な、未知の。

ulter-、語源的にはultra-と同じ、yonder、-or、比較接尾辞、語源的にはinteriorと同じ。

ulterior

ulterior: [17] Ulterior goes back to an unrecorded Latin *ulter ‘distant’ (a relative of ultrā ‘beyond’, source of the English prefix ultra-). Its comparative form was ulterior, which meant literally ‘more distant’. Its superlative form was ultimus, which lies behind English ultimate [17] and ultimatum [18] (etymologically the ‘farthest’ or last point).
=> ultimate, ultimatum

ulterior (adj.)

1640s, "on the other side of," from Latin ulterior "more distant, more remote, farther, on the farther side," comparative of *ulter "beyond" (see ultra-). The sense "not at present in view or consideration" (as in ulterior motives) is attested from 1735.

1. Sheila had an ulterior motive for trying to help Stan.

ヒラはスタンを助けたいと思っているのは別の図だ。

2.She must have some ulterior motive for being nice to me—what does she really want？

彼女は私にこんなに良くしてくれて、きっと下心があるに違いない—彼女はいったい何をしたいのだろうか。

3.She definitely had an ulterior motive in offering to help.

彼女が積極的に助けを申し出たのには、人に言えない動機があったに違いない。

4.I want to know what is our ulterior action.

次の行動が何なのか知りたい。

5.I suspect he may have had ulterior motives for being so generous.

気前がいいのは下心があるのではないかと疑った。