Synonyms of the word

imbecility

• n. The quality of being imbecile; weakness; feebleness, especially of mind.
• n. Something imbecilic; a stupid action, behaviour, etc.

backwardness

• n. The state of being backward.
• n. reluctance.

error

• n. (uncountable) The state, quality, or condition of being wrong.
• n. (countable) A mistake; an accidental wrong action or a false statement not made deliberately.
• n. (computing, countable) A failure to complete a task, usually involving a premature termination.
• n. (statistics, countable) The difference between a measured or calculated value and a true one.
• n. (baseball, countable) A play which is scored as having been made incorrectly.
• n. (appellate law, uncountable) One or more mistakes in a trial that could be grounds for review of the judgement.
• n. Any alteration in the DNA chemical structure occurring during DNA replication, recombination or repairing.
• v. (computing) To function improperly due to an error, especially accompanied by error message.
• v. (telecommunications) To show or contain an error or fault.
• v. (nonstandard) To err.

fault

• n. A defect; something that detracts from perfection.
• n. A mistake or error.
• n. A weakness of character; a failing.
• n. A minor offense.
• n. Blame; the responsibility for a mistake.
• n. (seismology) A fracture in a rock formation causing a discontinuity.
• n. (mining) In coal seams, coal rendered worthless by impurities in the seam.
• n. (tennis) An illegal serve.
• n. (electrical) An abnormal connection in a circuit.
• n. (obsolete) want; lack.
• n. (hunting) A lost scent; act of losing the scent.
• v. (transitive) To criticize, blame or find fault with something or someone.
• v. (intransitive, geology) To fracture.
• v. (intransitive) To commit a mistake or error.
• v. (intransitive, computing) To undergo a page fault.

folly

• n. Foolishness.
• n. Thoughtless action resulting in tragic consequence.
• n. A fanciful building built for purely ornamental reasons.

foolishness

• n. (uncountable) The state of being foolish.
• n. (countable) A thing or event that is foolish, or an absurdity.

mistake

• n. An error; a blunder.
• n. (baseball) A pitch which was intended to be pitched in a hard-to-hit location, but instead ends up in…
• v. (transitive) To understand wrongly, taking one thing for another, or someone for someone else.
• v. (intransitive) To commit an unintentional error; to do or think something wrong.
• v. (obsolete, rare) To take or choose wrongly.

retardation

• n. The act of retarding or delaying; hindrance.
• n. The extent to which anything is retarded; the result of any retarding or delay; mental, social, or physical…
• n. That which retards; an obstacle; an obstruction.
• n. (physics) Deceleration; reduction in the magnitude of velocity.
• n. (music) A suspension which resolves upwards.

slowness

• n. The quality or state of being slow.
• n. (physics) A unit, the reciprocal of velocity, that delineates the amount of time required for an object…

stupidity

• n. (uncountable) The property of being stupid.
• n. (countable) An act that is stupid.

subnormality

• n. The state or condition of being subnormal.