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flammable

flammable

41 2.8
Able to catch fire and burn quickly
  • adjective
  • /ˈflæməbl/
translation icon : inflamable
  • Charcoal is likely to be chosen as a substitute because it is light, flammable, and easy to store.
  • highly flammable
  • a flammable material
  • flammable substances

It was regulations about flammable pyjamas.

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Examples

  • If there is a loss of vacuum, a highly flammable oil and air fog can form.

    Academic text (1993)
  • The man says this cavern is full of highly flammable methane gas.

    Fiction book (2002)
  • Sugar is flammable and may result in smoke and fire.

  • So hydrogen is a flammable gas.

  • And, of course, in the garage there are other highly flammable materials we take for granted.

    Academic text (2007)
  • It's colorless, flammable, and very poisonous.

  • Hydrocarbons are excellent refrigerants, but they are also flammable and explosive.

    Academic text (1998)
  • It knew it needed to take steps, including clearing the highly flammable grasses from around the electric wires.

  • It's important to keep flammable items, like gasoline, in a safe storage container.

  • You should always check for flammable materials before starting a fire.

Synonyms

combustible
vsflammable
18 5.1

Easily catches fire and burns

is the same basic idea but highlighted as a warning
incendiary
vsflammable
12 8.3

Able to start fires and burn very quickly

describes simple ease of ignition rather than deliberate fire causing
highly combustible
vsflammable
3 4.3

Easily catches fire and burns quickly

expresses the same extreme ease of ignition rather than normal risk
inflammable
vsflammable
2 5.2

Easily set on fire and burns quickly

is the more common modern term for the same property
burnable
vsflammable
1 2.3

Able to catch fire and be destroyed by fire

adds that burning happens quickly, not just eventual combustion
combustive
vsflammable
  • Specialized
1 8.2

Able to make something start burning or burn more easily

means ordinary easy ignition rather than actively encouraging flames
highly inflammable
vsflammable
4.4

Easily catches fire and burns very quickly

describes the same risk but with stronger immediacy
ignitable
vsflammable
  • Specialized
5.6

Able to catch fire and burn easily

focuses on the same ability but in plain everyday wording
ignitible
vsflammable
  • Specialized
8.0

Able to catch fire and burn

emphasizes quick burning as a key everyday safety concern
fireable
vsflammable
5.0

Can burn easily

stresses rapid ignition as the typical safety meaning

Antonyms

5 4.0

Made so it does not burn in a fire

1 4.1

Does not catch fire or burn easily

Compounds

flammable liquid
  • Specialized
4 3.4

A liquid that catches fire easily and burns quickly

How Flammable

combustible
18 5.1
flammable
41 2.8
nonflammable
1 4.1

Surface Forms

flammable positive

Morphology

flammable = flame (transparent) = flame + flamm + able

The meaning is directly derived from 'flame' + the productive adjectival suffix '-able', so learners can infer 'capable of burning'.

Etymology

The word flammable comes from the Latin root flamma, which means 'flame'. With the ending -able meaning 'able to', flammable literally means 'able to catch fire', which is why we use it for things that burn easily.