Home/USA Today Rootonym/Speculation; expression of a theory without sufficient evidence: guesswork (noun)
Speculation; expression of a theory without sufficient evidence: guesswork (noun)
Looking for the answer to the USA Today Rootonym clue “Speculation; expression of a theory without sufficient evidence: guesswork (noun)”? The solution is CONJECTURE, a 10-letter word built on the root JECT (“throw, cast”). It appeared in the September 10, 2026 (Thursday) USA Today Rootonym. See the full puzzle for that day's other words.
Answer
CONJECTURE
***JECT***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”. Browse the full September 10, 2026 Rootonym puzzle for the other three words, or see all Rootonym answers.