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flammable vs inflammable

Both 'flammable' and 'inflammable' are correct, but they have opposite meanings. 'Flammable' means easily set on fire, while 'inflammable' means the same thing. However, 'inflammable' is less commonly used due to confusion with the prefix 'in-' which usually means 'not'.

Last updated: March 20, 2024 • 749 views

flammable

This is correct and commonly used in English.

Use 'flammable' to describe something that can easily catch fire or burn.

Examples:

Gasoline is highly flammable.
Be careful with flammable materials near open flames.

Show examples from the web [+]

The spray is flammable and should not be used next to a naked flame or any incandescent material. Aerozol jest palny i nie powinien być używany w pobliżu ...
Historically, flammable, inflammable and combustible meant capable of burning. The word "inflammable" came through French from the Latin inflammāre = "to ...
Aug 2, 2015 ... Surprisingly, both flammable and inflammable coexisted peacefully in English for hundreds of years before anyone decided to do something ...
That can happen, according to the report, when (flammable) methane leaks out of ... Hearings for Supreme Court justices, decisions of war, flammable federal ...

Alternatives:

combustible
ignitable
inflammable
ignitable
fire-prone

inflammable

This is correct but less commonly used due to potential confusion.

Although 'inflammable' means the same as 'flammable' (easily set on fire), it is less common due to the potential confusion with the prefix 'in-' which usually means 'not'.

Examples:

The fabric is inflammable and should be kept away from heat sources.
The warning label indicates that the substance is inflammable.

Show examples from the web [+]

Aug 2, 2015 ... Surprisingly, both flammable and inflammable coexisted peacefully in English for hundreds of years before anyone decided to do something ...
Jan 21, 2015 ... Understand the wrong definition of inflammable and you might end up with more than an embarrassing situation while talking to your English ...
capable of being set on fire and of burning quickly. : easily excited or angered. Full Definition of inflammable. 1 : flammable. 2 : easily inflamed, excited, ...
capable of being set on fire; combustible; flammable. 2. easily aroused or excited, as to passion or anger; irascible: an inflammable disposition. noun. 3.

Alternatives:

flammable
combustible
ignitable
fire-prone
easy to ignite

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