Make false by mutilation or addition; as of a message or story.

synonyms: distort, garble, warp.

Roget 495: be erroneous etc. adj.. cause error; mislead, misguide; lead astray, lead into error; beguile, misinform etc. (misteach) 538^†; delude; give a false impression, give a false idea; falsify, misstate; deceive etc. 545; lie etc. 544.    err; be in error etc. adj., be mistaken etc. v.; be deceived etc. (duped) 547; mistake, receive a false impression, deceive oneself; fall into error, lie under error, labor under an error etc. n.; be in the wrong, blunder; misapprehend, misconceive, misunderstand, misreckon, miscount, miscalculate etc. (misjudge) 481.    play at cross purposes, be at cross purposes etc. (misinterpret) 523.    trip, stumble; lose oneself etc. (uncertainty) 475; go astray; fail etc. 732; be in the wrong box; take the wrong sow by the ear etc. (mismanage) 699; put the saddle on the wrong horse; reckon without one's host; take the shadow for the substance etc. (credulity) 486; dream etc. (imagine) 515.    ... show more

Dutch: verminken

Tamper, with the purpose of deception:
— Falsify the data.

synonyms: cook, fake, fudge, manipulate, misrepresent, wangle.

Roget 544: be false etc. adj., be a liar etc. 548; speak falsely etc. adv.; tell a lie etc. 546; 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 etc. (misinterpret); prevaricate, equivocate, quibble; palter, palter to the understanding; repondre en Normand [Fr.]; 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 etc. 549; blague^†.    invent, fabricate; trump up, get up; force, fake, hatch, concoct; romance etc. (imagine) 515; 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 etc. 855; 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" [Macbeth]; ambiguas in vulgum spargere voces [Lat.]; deceive etc. 545.    ... show more

Prove false.

Dutch: vervalsen

Falsify knowingly.

Dutch: vervalsen

Insert words into texts, often falsifying it thereby.

synonyms: alter, interpolate.