like a hole in one's head

Prepositional phrase

emphatic informal postpositional

(informal, emphatic, postpositive) Absolutely not; used to describe how little one needs an undesirable thing or situation.

Japanese Meaning

絶対にほしいと思わない、全く必要としない / 非常に不必要で、受け入れられないという強い否定の意味合い

I don't need another smartphone like a hole in one's head.

私は新しいスマートフォンなんて絶対に必要ない。

Sense（1）

(informal, emphatic, postpositive) Absolutely not; used to describe how little one needs an undesirable thing or situation.

Ford looked at him for a moment. “Fort Apache?” he asked. “Yes, Fort Apache,” said Clothier.