Definitions for "goof"
Keywords:  faux, pas, fault, blundered, undermines
to commit a faux pas or fault.
commit a faux pas or a fault or make a serious mistake; "I blundered during the job interview"
a production fault which disturbs, inhibits, or undermines the reality effect
Keywords:  doze, outmoded, heroin, wander, fail
to wander in attention, to fail to discharge a responsibility (also, now outmoded, to goof off).
doze off after taking a drug, usually heroin
Keywords:  stupid, fool
a stupid fool.
Keywords:  annoyance, funny, realism, scene, error
A goof in film making is an error made during film production which finds its way into the final released picture. Depending upon the film and the actual scene, the goof may have different effects: a loss in realism, an annoyance, or it could just be funny. It is often a type of continuity error.
Derogatory - considered in Canadian prisons to be one of the strongest insults.