DIVISION (I.) FORMATION OF IDEAS
Section III. MATERIALS FOR REASONING
Degrees of Evidence
Possibility –N. potentiality; what may be, what is possible; compatibility (agreement). practicability, feasibility; practicableness. contingency, chance.
Impossibility. –N. what cannot be, what can never be; sour grapes; infeasibility, impracticability; hopelessness.
Thesaurus of Words and Phrases by Peter Mark Roget, M.D., F.R.S. Enlarged by John Lewis Roget, M.A., New Edition Revised and Enlarged by Samuel Romily Roget, M.A. Published by Grosset & Dunlap, the edition is copyright 1941, 1947.