extinct

extinct — adjective

1. describes a type of animal, plant, language, or way of life that once existed on

1.形容詞B2
釋義

describes a type of animal, plant, language, or way of life that once existed on earth but has completely died out, so that no members or speakers remain anywhere.

例句

The dodo bird became extinct in the late 1600s due to hunting and habitat loss.

became extinct + time period + cause

Many indigenous languages in South America risk extinction as fewer children learn them from elders.

risk extinction + reason

同義詞
  • vanished

    emphasises disappearance without a clear trace; can apply to civilisations or objects, not typically to biological species

  • lost

    broader term that can mean destroyed, misplaced, or simply no longer available; a lost city could be rediscovered, but an extinct species cannot

  • defunct

    used for organisations, systems, or laws that no longer function; rarely used for living things

反義詞
  • living

    still alive and present

  • extant

    formal term for a species, language, or document that still exists

  • existing

    currently in existence

文法句型

become + extinct

go + extinct

be + extinct

extinct + noun (species, language, civilization)

用法筆記

Typically used with the verbs become, go, or be declared. Common nouns this adjective modifies include species, language, civilization, culture, tradition, and custom. A species is not called extinct until every last individual has been confirmed dead or gone.

常見錯誤

Pandas are extinct.
Pandas are endangered.
💡extinct means completely gone; endangered means at serious risk but still surviving.
That old custom is now extincted.
That old custom is now extinct.
💡extinct is an adjective, not a verb. Do not add -ed.

2. describes a volcano that has not erupted in recorded history and is not expected

2.形容詞B2
釋義

describes a volcano that has not erupted in recorded history and is not expected to erupt again, so its cone and crater remain but there is no molten rock activity below the surface.

例句

Mount Hoei in Japan is an extinct volcano that has not erupted for over ten thousand years.

extinct volcano + named example + time since eruption

The trail led the group up the cone of an extinct volcano to a crater filled with rainwater.

同義詞
  • inactive

    broader term that also covers dormant volcanoes; does not carry the same finality as extinct

  • dead

    informal equivalent for extinct volcano

反義詞
  • active

    currently erupting or likely to erupt

  • dormant

    temporarily inactive but could erupt again

文法句型

extinct + volcano

用法筆記

Used almost exclusively to modify the noun volcano. Do not confuse with dormant — a dormant volcano could erupt again, while an extinct volcano cannot.

常見錯誤

Mount Vesuvius is an extinct volcano.
Mount Vesuvius is a dormant volcano.
💡Vesuvius erupted in 1944 and could erupt again, so it is dormant, not extinct.

3. describes a fire, flame, or source of artificial light that has stopped burning

3.形容詞C1
釋義

describes a fire, flame, or source of artificial light that has stopped burning or shining completely, leaving only cold ash, embers, or a dead bulb.

例句

Élise knelt by the fireplace and blew on the coals, but the fire was extinct and would not catch.

When the firefighters arrived, the blaze had burned itself extinct, leaving only blackened timber.

burned itself extinct + remains of fire

同義詞
  • out

    everyday word for a fire or light that is no longer burning

  • dead

    informal; a dead fire has no remaining heat or flame

反義詞
  • alight

    burning or glowing

  • lit

    illuminated or burning

文法句型

be + extinct

burn + extinct

用法筆記

In modern everyday English, the adjective extinct for fire has largely been replaced by out or dead. Using extinct in this sense sounds literary or old-fashioned and is uncommon outside novels and historical writing.

常見錯誤

The campfire is extinct, let us light another one.
The campfire is out, let us light another one.
💡out is the natural choice in everyday speech; extinct sounds overly formal.

extinct — verb