形容詞 creditable:

1. worthy of often limited commendation

1. The student made a creditable effort on the essay.
   這個學生在這篇短論上所作的努力值得贊揚
2. A creditable story.
   一個可信的故事

cred.it.a.ble

adj.（形容詞）
Deserving of often limited praise or commendation:
值得贊揚的，可稱贊的：值得有限制的贊揚或稱贊的：
例句：
The student made a creditable effort on the essay.
這個學生在這篇短論上所作的努力值得贊揚

Worthy of belief:
值得信任的：
例句：
a creditable story.
一個可信的故事

Deserving of commercial credit; creditworthy:
值得給予商業(yè)信貸的；信譽卓著的：
例句：
a creditable customer.
一個信譽卓著的客戶

That can be assigned.
可歸功于的

【引伸】
cred.itabil.ity 或
cred.itableness
n.（名詞）
cred.itably
adv.（副詞）