proverbial

形容词 proverbial:

1. of or relating to or resembling or expressed in a proverb
2. widely known and spoken of

1. The conditioned response, once it is firmly established, can be extinguished dozens of times, but it sill always return, like the proverbial bad penny.
   条件反射一经形成，虽然可以一次又一次地压制下去，但是它总会重新再现，真是摆也摆不脱扔也扔不掉。
2. He is the proverbial square peg in a round hole.
   他正是谚语中所说的那种方枘圆凿不得其所的人。

pro.ver.bi.al

adj.（形容词）
Of the nature of a proverb.
谚语的：谚语的性质的
Expressed in a proverb.
用一句谚语表示的
Widely referred to, as if the subject of a proverb; famous.
出名的：被广泛地提到的，好象谚语的主题一样；著名的

【引伸】
prover.bially
adv.（副词）