falsify

• POS: Verb (usu participle), Verb (transitive)
• HYPHEN: fal=si=fy

CIDE DICTIONARY

falsify, v. t. [L. falsus false + -ly: cf. F. falsifier. See False, a.].

•  To make false; to represent falsely.  [1913 Webster]

  "The Irish bards use to forge and falsify everything as they list, to please or displease any man."  [1913 Webster]
•  To counterfeit; to forge; as, to falsify coin.  [1913 Webster]
•  To prove to be false, or untrustworthy; to confute; to disprove; to nullify; to make to appear false.  [1913 Webster]

  "By how much better than my word I am,
  By so much shall I falsify men's hope."  [1913 Webster]

  "Jews and Pagans united all their endeavors, under Julian the apostate, to baffle and falsify the prediction."  [1913 Webster]
•  To violate; to break by falsehood; as, to falsify one's faith or word.  Sir P. Sidney.  [1913 Webster]
•  To baffle or escape; as, to falsify a blow.  Butler.  [1913 Webster]
•  To avoid or defeat; to prove false, as a judgment.  Blackstone.  [1913 Webster]
•  To show, in accounting, (an inem of charge inserted in an account) to be wrong.  Story. Daniell.  [1913 Webster]
•  To make false by multilation or addition; to tamper with; as, to falsify a record or document.  [1913 Webster]

falsify, v. i. 

 To tell lies; to violate the truth.  [1913 Webster]
"It is absolutely and universally unlawful to lie and falsify."  [1913 Webster]
"South."  [1913 Webster]

OXFORD DICTIONARY

falsify, v.tr. (-ies, -ied)
1 fraudulently alter or make false (a document, evidence, etc.).
2 misrepresent.
3 make wrong; pervert.
4 show to be false.
5 disappoint (a hope, fear, etc.).

Derivative

falsifiable adj. falsifiability n. falsification n.

Etymology

ME f. F falsifier or med.L falsificare f. L falsificus making false f. falsus false

THESAURUS

falsify

alter, be untruthful, belie, burlesque, camouflage, caricature, change, cheat, color, contort, contradict, contravene, cook, deceive, deny, disguise, distort, doctor, draw the longbow, dress up, embellish, embroider, equivocate, evade, exaggerate, fake, fib, fudge, garble, gild, gloss, gloss over, lie, lie flatly, mask, miscite, miscolor, mislead, misquote, misreport, misrepresent, misstate, misteach, overdraw, overstate, palter, parody, pervert, prevaricate, shift, shift about, slant, speak falsely, story, strain, stretch the truth, tell a lie, titivate, traverse, travesty, trick out, trump up, twist, understate, varnish, warp, whitewash, wrench

ROGET THESAURUS

falsify

Error

VB be erroneous, cause error, mislead, misguide, lead astray, lead into error, beguile, misinform, delude, give a false impression, give a false idea, falsify, misstate, deceive, lie, err, be in error, be mistaken, be deceived, mistake, receive a false impression, deceive oneself, fall into error, lie under error, labor under an error, be in the wrong, blunder, misapprehend, misconceive, misunderstand, misreckon, miscount, miscalculate, play at cross purposes, be at cross purposes, trip, stumble, lose oneself, go astray, fail, be in the wrong box, take the wrong sow by the ear, put the saddle on the wrong horse, reckon without one's host, take the shadow for the substance, dream.

Falsehood

VB be false, be a liar, speak falsely, tell a lie, lie, fib, lie like a trooper, swear false, forswear, perjure oneself, bear false witness, misstate, misquote, miscite, misreport, misrepresent, belie, falsify, pervert, distort, put a false construction upon (misinterpret), prevaricate, equivocate, quibble, palter, palter to the understanding, repondre en Normand, trim, shuffle, fence, mince the truth, beat about the bush, blow hot and cold, play fast and loose, garble, gloss over, disguise, give a color to, give a gloss, put a gloss, put false coloring upon, color, varnish, cook, dress up, embroider, varnish right and puzzle wrong, exaggerate, blague, invent, fabricate, trump up, get up, force, fake, hatch, concoct, romance, cry 'wolf!', dissemble, dissimulate, feign, assume, put on, pretend, make believe, play possum, play false, play a double game, coquet, act a part, play a part, affect, simulate, pass off for, counterfeit, sham, make a show of, malinger, say the grapes are sour, cant, play the hypocrite, sham Abraham, faire pattes de velours, put on the mask, clean the outside of the platter, lie like a conjuror, hand out false colors, hold out false colors, sail under false colors, commend the poisoned chalice to the lips, ambiguas in vulgum spargere voces, deceive.