All impair synonyms

verb impair

• harm — a U.S. air-to-surface missile designed to detect and destroy radar sites by homing on their emissions.
• reduce — to bring down to a smaller extent, size, amount, number, etc.: to reduce one's weight by 10 pounds.
• mar — to damage or spoil to a certain extent; render less perfect, attractive, useful, etc.; impair or spoil: That billboard mars the view. The holiday was marred by bad weather.
• decrease — When something decreases or when you decrease it, it becomes less in quantity, size, or intensity.
• worsen — Make or become worse.
• debilitate — If you are debilitated by something such as an illness, it causes your body or mind to become gradually weaker.
• lessen — to become less.
• damage — To damage an object means to break it, spoil it physically, or stop it from working properly.
• hurt — to cause bodily injury to; injure: He was badly hurt in the accident.
• tarnish — to dull the luster of (a metallic surface), especially by oxidation; discolor.
• prejudice — an unfavorable opinion or feeling formed beforehand or without knowledge, thought, or reason.
• spoil — to damage severely or harm (something), especially with reference to its excellence, value, usefulness, etc.: The water stain spoiled the painting. Drought spoiled the corn crop.
• destroy — To destroy something means to cause so much damage to it that it is completely ruined or does not exist any more.
• diminish — to make or cause to seem smaller, less, less important, etc.; lessen; reduce.
• blunt — If you are blunt, you say exactly what you think without trying to be polite.
• undermine — to injure or destroy by insidious activity or imperceptible stages, sometimes tending toward a sudden dramatic effect.
• weaken — to make weak or weaker.
• ding — to cause surface damage to; dent: Flying gravel had dinged the car's fenders.
• invalidate — to render invalid; discredit.
• cheapen — If something cheapens a person or thing, it lowers their reputation or position.
• blemish — A blemish is a small mark on something that spoils its appearance.
• debase — To debase something means to reduce its value or quality.
• injure — to do or cause harm of any kind to; damage; hurt; impair: to injure one's hand.
• tweak — to pinch and pull with a jerk and twist: to tweak someone's ear; to tweak someone's nose.
• disqualify — to deprive of qualification or fitness; render unfit; incapacitate.
• devalue — To devalue something means to cause it to be thought less impressive or less deserving of respect.
• unfit — not fit; not adapted or suited; unsuitable: He was unfit for his office.
• vitiate — to impair the quality of; make faulty; spoil.
• queer — strange or odd from a conventional viewpoint; unusually different; singular: a queer notion of justice.
• total — constituting or comprising the whole; entire; whole: the total expenditure.
• devaluate — (transitive) To reduce in value.
• deteriorate — If something deteriorates, it becomes worse in some way.
• rough up — having a coarse or uneven surface, as from projections, irregularities, or breaks; not smooth: rough, red hands; a rough road.
• blight — You can refer to something as a blight when it causes great difficulties, and damages or spoils other things.
• ruin — ruins, the remains of a building, city, etc., that has been destroyed or that is in disrepair or a state of decay: We visited the ruins of ancient Greece.
• mess up — a dirty, untidy, or disordered condition: The room was in a mess.
• hinder — to cause delay, interruption, or difficulty in; hamper; impede: The storm hindered our progress.
• enervate — Cause (someone) to feel drained of energy or vitality; weaken.
• enfeeble — Make weak or feeble.