Speculation; expression of a theory without sufficient evidence: guesswork (noun)
USA Today Rootonym clue · 10 letters · last seen September 10, 2026
Answer
CONJECTURE
The Root
JECTmeans “throw, cast”
In a sentence: It is Don's CONJECTURE, based on past events, that Ken and Terry will not come to the party.
About this clue
The Rootonym clue “Speculation; expression of a theory without sufficient evidence: guesswork (noun)” has the answer CONJECTURE (10 letters), built on the root JECT, which means “throw, cast”. See the full September 10, 2026 Rootonym puzzle for the other three words, or browse all Rootonym answers.