English · Slang Attested

iffy

In real, traceable use. Part of the curated seed collection; community review is coming.

Meaning · English

Of dubious authenticity, legitimacy or legality.

Where it’s used: Used American English

He's selling new CD players for £20 each – that sounds a bit iffy to me.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

Common questions

What does “iffy” mean?

Of dubious authenticity, legitimacy or legality.

Is “iffy” formal or informal?

iffy is generally slang.

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