Jet-Black
/ˌdʒɛt ˈblæk/noun
Extremely black; very dark or black in color.
Did you know?The first word, jet, comes from a black fossilized lignite prized in antiquity for jewelry and talismans, so the phrase carries a real fossil-gemstone history rather than a magical one.
Etymological Timeline
Ancient Greek
Greek
gagátēs
“Jet stone; a black, glossy gemstone”
Latin
Latin
gagates
“Jet; the black mineral”
Old French
Old French
jaiet / jayet
“Jet; the black ornamental stone”
Middle English
English
jet
“The black mineral used in jewelry and ornament”
16th Century
English
jet-black
“Deep black, like jet”
Modern English
English
jet-black
“Extremely black”