1. [ adjective ] of a fire; being out or having grown cold
Synonyms: out quenched extinguished

"threw his extinct cigarette into the stream" "faint smoke from the extinguished candle" "the fire is out" "the quenched flames"

Related terms: dead
2. [ adjective ] no longer in existence; lost or especially having died out leaving no living representatives
Synonyms: nonextant

"an extinct species of fish" "an extinct royal family" "extinct laws and customs"

Related terms: extant dead nonexistent
3. [ adjective ] of e.g. volcanos; permanently inactive
Synonyms: inactive

"an extinct volcano"

Related terms: dormant active dead extinction
Similar spelling:   extinction