devil in disguise

Proposed by a contributor, not yet supported by evidence.

Meaning · English

Someone or something that appears harmless but is actually evil or harmful

Nghĩa · Tiếng Việt

Ai hoặc điều gì đó có vẻ vô hại nhưng thực sự độc ác

Machine-translated — suggest a fix

Literally: a devil hiding behind a disguise
Where it’s used: Used Widespread English

Examples

He seemed like a nice guy, but he turned out to be a devil in disguise

AI-drafted example auto-approved by rule (illustrative, not a corpus attestation)

Sources & notes

Listed in Wiktionary’s “English idioms” category (retrieved 2026-07-29); definition pending editorial review. Definition drafted by AI (@cf/meta/llama-3.3-70b-instruct-fp8-fast) and auto-approved by rule on 2026-07-30; pending editor spot-check.

Common questions

What does “devil in disguise” mean?

Someone or something that appears harmless but is actually evil or harmful Literally: a devil hiding behind a disguise

Is “devil in disguise” formal or informal?

No register label has been reviewed yet — treat it as neutral and check the usage notes above.