by any stretch of the imagination

Prepositional phrase

idiomatic in negative constructions

(idiomatic, chiefly in negative constructions) by any means; in any sense; regardless of how one puts or considers it

Japanese Meaning

どのように考えても、それは全く～ではない / いかなる意味で捉えても～と認められない / どんな見方をしても～と評価できない

That explanation isn't convincing by any stretch of the imagination.

その説明はいかなる意味でも説得力がありません。

Sense（1）

(idiomatic, chiefly in negative constructions) by any means; in any sense; regardless of how one puts or considers it

The British Prime Minister isn't a monarch by any stretch of the imagination.