hadn't a

abbreviation nonstandard

(nonstandard) hadn't (Contraction of had not have.)

Japanese Meaning

非標準的な短縮形で、「had not have」を縮めた形、つまり否定の意味を表す助動詞の縮約形です。

If I hadn't a known she was coming, I wouldn't have baked a cake.

もし彼女が来ると知らなかったら、ケーキを焼かなかったでしょう。

Sense（1）

(nonstandard) hadn't (Contraction of had not have.)

We can go back and reflect on things we've done in our past and say, "Boy, I wish we hadn't a gone that way".

hadn'thave

（ canonical ）