Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.

Class IV. Words Relating to the Intellectual Faculties
Division (I) Formation of Ideas
Section III. Materials for Reasoning

472. Probability.

   NOUN:PROBABILITY, likelihood; credibleness; likeness &c. adj.; vraisemblance [F.], verisimilitude, plausibility; color, semblance, show of; presumption; presumptive -, circumstantial- evidence; credibility.
  reasonable -, fair -, good -, favorable- -chance, – prospect; prospect, well- grounded hope; chance [See Chance].
   VERB:BE PROBABLE &c. adj.; give -, lend- color to; point to; imply (evidence) [See Evidence]; bid fair (promise) [See Prediction]; stand fair for; stand -, run- a good chance; stand-, run- an even chance.
  PRESUME, infer, venture, suppose, take for granted, think likely, dare say, flatter oneself; expect [See Expectation]; count upon (believe) [See Belief].
   ADJECTIVE:PROBABLE, likely, hopeful, to be expected, in a fair way.
  PLAUSIBLE, specious, ostensible, colorable, ben trovato [It.], well-founded, reasonable, credible, easy of belief, presumable, presumptive, apparent.
   ADVERB:PROBABLY &c. adj.; belike [archaic]; in all probability, in all likelihood; very -, most- likely; like enough; very like; ten &c. to one; apparently, seemingly, to all seeming, as like as not [colloq.], according to every reasonable expectation; primâ facie [L.]; to all appearance (to the eye) [See Appearance].
  1. The chances are, the odds are.
  2. Appearances -, chances- are in favor of.
  3. There is reason to -believe, – think, – expect.
  4. I dare say.
  5. Dollars to doughnuts.—U. S.
  6. All Lombard Street to a China orange.