Synonyms of the word

malfunctioning

• v. present participle of malfunction.
• n. A malfunction.

amiss

• adj. Wrong; faulty; out of order; improper or otherwise incorrect.
• adv. Mistakenly, wrongly.
• n. (obsolete) Fault; wrong; an evil act, a bad deed.

awry

• adv. Obliquely, crookedly; askew.
• adv. Perversely, improperly.
• adj. Turned or twisted toward one side; crooked, distorted, out of place.
• adj. Wrong or distorted; perverse, amiss.

bad

• adj. Not good; unfavorable; negative.
• adj. Not suitable or fitting.
• adj. Seemingly non-appropriate, in manners, etc.
• adj. Unhealthy.
• adj. Tricky; stressful; unpleasant.
• adj. Evil; wicked.
• adj. Faulty; not functional.
• adj. (of food) Spoiled, rotten, overripe.
• adj. (of breath) Malodorous, foul.
• adj. (informal) Bold and daring.
• adj. (hip-hop slang) good, superlative.
• adj. (of a need or want) Severe, urgent.
• adv. (now colloquial) Badly.
• n. (slang) Error, mistake.
• n. (countable, uncountable, economics) An item (or kind of item) of merchandise with negative value; an unwanted…
• adj. (slang) Fantastic.
• v. (archaic) Alternative past tense of bid. See bade.
• v. (Britain, dialect, transitive) To shell (a walnut).

dead

• adj. (not comparable) No longer living.
• adj. (hyperbolic) Figuratively, not alive; lacking life.
• adj. (of another person) So hated that they are absolutely ignored.
• adj. Without emotion.
• adj. Stationary; static.
• adj. Without interest to one of the senses; dull; flat.
• adj. Unproductive.
• adj. (not comparable, of a machine, device, or electrical circuit) Completely inactive; without power; without…
• adj. (not comparable) Broken or inoperable.
• adj. (not comparable) No longer used or required.
• adj. (engineering) Not imparting motion or power.
• adj. (not comparable, sports) Not in play.
• adj. (not comparable, golf, of a golf ball) Lying so near the hole that the player is certain to hole it in…
• adj. (not comparable, baseball, slang, 1800s) Tagged out.
• adj. (not comparable) Full and complete.
• adj. (not comparable) Exact.
• adj. Experiencing pins and needles (paresthesia).
• adj. (informal) (Certain to be) in big trouble.
• adj. Constructed so as not to transmit sound; soundless.
• adj. (obsolete) Bringing death; deadly.
• adj. (law) Cut off from the rights of a citizen; deprived of the power of enjoying the rights of property.
• adv. (degree) Exactly right.
• adv. (degree) Very, absolutely, extremely, suddenly.
• adv. As if dead.
• n. (uncountable, singular only, often with "the") Time when coldness, darkness, or stillness is most intense.
• n. (plural, with "the") Those who have died.
• v. (transitive) To prevent by disabling; stop.
• v. (transitive) To make dead; to deaden; to deprive of life, force, or vigour.
• v. (Britain, transitive, slang) To kill.

defective

• adj. Having one or more defects.
• adj. (grammar, of a lexeme, especially a verb) lacking some forms; e.g., having only one tense or being usable…
• n. A person or thing considered to be defective.

haywire

• n. Wire used to bind bales of hay.
• adj. Roughly-made, unsophisticated, decrepit (from the use of haywire for temporary repairs).
• adj. Behaving erratically or uncontrollably, especially of a machine or mechanical process; usually used with…

nonfunctional

• adj. Not functional; useless; broken.

run-down

• adj. (of a person) Tired and exhausted.
• adj. (of a place) Decrepit.
• adj. (of a clockwork mechanism) Having the spring unwound.

wrong

• adj. Incorrect or untrue.
• adj. Asserting something incorrect or untrue.
• adj. Immoral, not good, bad.
• adj. Improper; unfit; unsuitable.
• adj. Not working; out of order.
• adj. Designed to be worn or placed inward; as, the wrong side of a garment or of a piece of cloth.
• adj. (obsolete) Twisted; wry.
• adv. (informal) In a way that isn't right; incorrectly, wrongly.
• n. Something that is immoral or not good.
• n. An instance of wronging someone (sometimes with possessive to indicate the wrongdoer).
• n. The incorrect or unjust position or opinion.
• n. The opposite of right; the concept of badness.
• v. To treat unjustly; to injure or harm.
• v. To deprive of some right, or to withhold some act of justice.
• v. To slander; to impute evil to unjustly.