noun

speculator

Someone who forms theories without firm evidence.

Without any evidence, the speculator blames the blackout on sabotage.

Etymology

The source's observing sense extended to mental consideration. A speculator forms possible explanations, especially when direct evidence does not settle the matter.

More examples

  • Online speculators offer competing explanations for the strange lights.
  • A careful historian checks sources rather than acting as a speculator.
  • She calls him a speculator because his theory lacks evidence.

Forms

speculator · speculators

speculate verb — Form theories without enough supporting evidence.

speculation noun — Ideas or theories formed without firm evidence.

Similar words

theorist
Develops explanatory ideas, which may rest on strong evidence.
guesser
Suggests answers without certainty, not necessarily developing a theory.