Grue
/ɡruː/noun
A hypothetical, nonstandard word used in philosophy and fiction, often meaning a color or creature that is green before a certain time and blue after it.
Did you know?"Grue" became famous in Nelson Goodman’s 1955 riddle of induction, where it exposes how language can make the future feel magically pre-written.
Etymological Timeline
1955
English
grue
“A coined philosophical term for a time-dependent predicate used to challenge how we justify predictions.”
1955
English
grue
“Popularized by philosopher Nelson Goodman in The Structure of Appearance and Fact, Fiction, and Forecast to test the logic of induction.”
20th Century
English
grue
“Used in speculative fiction and gaming as a monster name, especially for a lurking creature in darkness.”
Modern English
English
grue
“A rare word with specialized philosophical and fictional uses, not a standard everyday dictionary term.”