A Proposer of Ideas or Beliefs to Explain Things

This page is the CodyCross answer for the clue below from Inside the Spaceship, Group 1198, Puzzle 2 (Time Travel).

Question is: A Proposer of Ideas or Beliefs to Explain Things

and the answer is: THEORIST

Word Meaning:

THEORIST — Someone who constructs theories, especially in the arts or sciences.

Definitions from Wiktionary.

A proposer of ideas or beliefs to explain things — CodyCross Answer | CodyCross Solutions