檢查員簽的那張合格證
最貼字面的一族：certify + -able，送去驗會過。紙上寫的是「合格」。
adjective · C1
Good enough, safe enough or genuine enough to pass an official check and be given a certificate.
合乎認證標準的；可通過檢驗的
核心畫面
You can picture certifiable as one question asked about anything: would an official put their name on a paper about this? The word is built exactly that way — certify plus -able, able to be certified. Picture an inspector with a pen, looking, deciding, signing. Everything the word does comes from what is written on that paper. Milk that passes the test. A person a doctor signs into hospital. A hit so obvious it is as if someone had already stamped it.
可以想成這個字在問一句話：有沒有人願意在紙上簽名，為這件事背書？它的組成正好就是這樣：certify（開證明）加 -…更多收起
可以想成這個字在問一句話：有沒有人願意在紙上簽名，為這件事背書？它的組成正好就是這樣：certify（開證明）加 -able（可以被…的）。畫面是一個拿著筆的檢查員，看一看、決定、簽下去。後面每個意思的差別，只在那張紙上寫的是什麼。可能是牛奶合格，可能是醫生簽字把人送醫，也可能是紅到像早就蓋過章。From the word’s history
From certify plus the suffix -able, which comes through Old French -able from Latin -abilis / -bilis, 'able to be'. So the word is literally 'able to be certified'.
由 certify 加上字尾 -able 組成。-able 經由古法文 -able 來自拉丁文 -ābilis／-bilis，意思是「可以被…的」。所以這個字字面上就是「可以被開出證明的」。
Wiktionary 'certifiable' etymology tree, supplied in this packet (kaikki:3f6f69a190036ae4:1382450101)
Three branches
醫生簽的那張強制送醫單
同一張紙，內容換成醫生對一個人的認定。英文把這個法律動作借來形容誇張的行為。
adjective · C2
Behaving in such a wild, strange or dangerous way that people say you must be mentally ill.
瘋了的；該被送醫的
用一張想像的證書掛保證
這裡沒有真的檢查員，那張紙是一個大家都懂的玩笑：這東西的資格假不了。
adjective · C1
Used before a noun to say that someone or something really is what you are calling them, with no doubt at all.
貨真價實的；不折不扣的