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 V. Results of Reasoning

495. Error.

   NOUN:ERROR, fallacy; misconception, misapprehension, misunderstanding; aberration, aberrance or aberrancy; inexactness &c. adj.; laxity; misconstruction (misinterpretation) [See Misinterpretation]; anachronism; miscomputation (misjudgment) [See Misjudgment]; non sequitur [L.] [See Intuition. Sophistry]; misstatement, misreport; mumpsimus.
  MISTAKE; miss, fault, blunder, cross-purposes, oversight, misprint, erratum, corrigendum, slip, blot, flaw, loose thread; trip, stumble (failure) [See Failure]; botchery (want of skill) [See Unskillfulness]; slip of the tongue, lapsus linguœ [L.]; slip of the pen, lapsus calami [L.], clerical error; bull (absurdity) [See Absurdity]; Spoonerism, Malapropism, Leiterism [U. S.], Mrs. Partington; haplography.
  DELUSION, illusion; false -, warped -, distorted- -impression, – idea; bubble; self-deceit, self-deception; mists of error; exploded -notion, – idea, – superstition.
  heresy (heterodoxy) [See Heterodoxy]; hallucination (insanity) [See Insanity]; false light (fallacy of vision) [See Dim-sightedness]; dream (fancy) [See Imagination]; fable (untruth) [See Untruth]; bias (misjudgment) [See Misjudgment]; misleading &c. v.
  MISLEAD, misguide; lead astray, lead into error; cause error; beguile, misinform (misteach) [See Misteaching]; delude; give a false -impression, – idea; falsify, misstate; deceive [See Deception]; lie [See Falsehood].
  ERR; be in error &c. adj., be mistaken &c. v.; be deceived (duped) [See Dupe]; mistake, receive a false impression, deceive oneself; fall into -, lie under -, labor under- an error &c. n.; be in the wrong, blunder; misapprehend, misconceive, misunderstand, misreckon, miscount, miscalculate (misjudge) [See Misjudgment].
  play -, be- at cross purposes (misinterpret) [See Misinterpretation].
  TRIP, stumble; lose oneself (uncertainty) [See Uncertainty]; go astray; fail [See Failure]; be in the wrong box; take the wrong sow by the ear (mismanage) [See Unskillfulness]; put the saddle on the wrong horse; reckon without one’s host; take the shadow for the substance (credulity) [See Credulity]; dream (imagine) [See Imagination].
   ADJECTIVE:ERRONEOUS, untrue, false, devoid of truth, faulty, erring, fallacious, apocryphal, unreal, ungrounded, groundless; unsubstantial [See Unsubstantiality]; heretical (heterodox) [See Heterodoxy]; unsound; illogical [See Intuition. Sophistry].
  INEXACT, unexact, inaccurate, incorrect; indefinite (uncertain) [See Uncertainty].
  ILLUSIVE, illusory, delusive; mock, ideal (imaginary) [See Imagination]; spurious [See Deception]; deceitful [See Falsehood]; perverted.
  CONTROVERTIBLE, unsustainable, unsustained, unauthentic, unauthenticated, untrustworthy.
  EXPLODED, refuted, discarded.
  MISTAKEN &c. v.; in error, under an error &c. n.; tripping &c. v.; out, out in one’s reckoning; aberrant; beside -, wide of- -the mark, – the truth; astray (at fault) [See Uncertainty]; on -a false, – the wrong- -scent, – trail; in the wrong box; at cross-purposes, all in the wrong; all out [colloq.]; all abroad [colloq.], at sea, bewildered.
   ADVERB:more or less.
  1. Errare est humanum.
  2. Mentis gratissimus error.—Horace
  3. On the dubious waves of error tost.—Cowper
  4. To err is human, to forgive divine.—Pope
  5. You lie—under a mistake.—Shelley
  6. ’Tis safest in matrimony to begin with a little aversion.—Sheridan
  7. The village that voted the earth was flat.—Kipling
  8. We all have a half-warmed fish in our bosoms.—Spoonerism