Pertaining to or occurring at night; opposite of diurnal (adjective)
USA Today Rootonym clue · 9 letters · last seen August 29, 2026
Answer
NOCTURNAL
The Root
NOCTmeans “night”
In a sentence: Raccoons are NOCTURNAL animals that feed from contents of garbage cans in the dark.
About this clue
The Rootonym clue “Pertaining to or occurring at night; opposite of diurnal (adjective)” has the answer NOCTURNAL (9 letters), built on the root NOCT, which means “night”. See the full August 29, 2026 Rootonym puzzle for the other three words, or browse all Rootonym answers.