形容詞 ostensible:

1. appearing as such but not necessarily so
   同義詞：apparent, seeming
2. represented or appearing as such; pretended
   同義詞：ostensive

1. Seeming or professed; ostensible.
   假裝的表面上的或自稱的; 貌似真實的
2. An ostensible or professed purpose; an excuse.
   借口，托詞表面的目的; 理由

os.ten.si.ble

adj.（形容詞）
Represented or appearing as such; ostensive:
表面上的：表現(xiàn)或看起來象…的；貌似真實的：
例句：
His ostensible purpose was charity, but his real goal was popularity.
從表面看來他是為了慈善事業(yè)，但他真正的目的卻是提高自己的知名度

來源：
French
法語
from Medieval Latin ostônsibilis
源自 中世紀拉丁語 ostônsibilis
from Latin ostônsus [past participle of] ostendere [to show]
源自 拉丁語 ostônsus [] ostendere的過去分詞 [顯示]
ob- [ob-]
ob- [ob-前綴]
tendere [to stretch] * see ten-
tendere [伸展，拉緊] *參見 ten-

【引伸】
osten.sibly
adv.（副詞）