All weaken synonyms

verb weaken

• deteriorate — If something deteriorates, it becomes worse in some way.
• fail — to fall short of success or achievement in something expected, attempted, desired, or approved: The experiment failed because of poor planning.
• decline — If something declines, it becomes less in quantity, importance, or strength.
• wane — to decrease in strength, intensity, etc.: Daylight waned, and night came on. Her enthusiasm for the cause is waning.
• fade — to lose brightness or vividness of color.
• flag — flagstone (def 1).
• abate — If something bad or undesirable abates, it becomes much less strong or severe.
• dwindle — to become smaller and smaller; shrink; waste away: His vast fortune has dwindled away.
• wear off — to carry or have on the body or about the person as a covering, equipment, ornament, or the like: to wear a coat; to wear a saber; to wear a disguise.
• subside — to sink to a low or lower level.
• reduce — to bring down to a smaller extent, size, amount, number, etc.: to reduce one's weight by 10 pounds.
• lessen — to become less.
• diminish — to make or cause to seem smaller, less, less important, etc.; lessen; reduce.
• fall off — to drop or descend under the force of gravity, as to a lower place through loss or lack of support.
• cripple — A person with a physical disability or a serious permanent injury is sometimes referred to as a cripple.
• decrease — When something decreases or when you decrease it, it becomes less in quantity, size, or intensity.
• depress — If someone or something depresses you, they make you feel sad and disappointed.
• dilute — to make (a liquid) thinner or weaker by the addition of water or the like.
• halt — to falter, as in speech, reasoning, etc.; be hesitant; stumble.
• impair — to make or cause to become worse; diminish in ability, value, excellence, etc.; weaken or damage: to impair one's health; to impair negotiations.
• lower — to cause to descend; let or put down: to lower a flag.
• sap — Fortification. a deep, narrow trench constructed so as to form an approach to a besieged place or an enemy's position.
• soften — to make soft or softer.
• undermine — to injure or destroy by insidious activity or imperceptible stages, sometimes tending toward a sudden dramatic effect.
• adulterate — If something such as food or drink is adulterated, someone has made its quality worse by adding water or cheaper products to it.
• crumble — If something crumbles, or if you crumble it, it breaks into a lot of small pieces.
• cut — If you cut something, you use a knife or a similar tool to divide it into pieces, or to mark it or damage it. If you cut a shape or a hole in something, you make the shape or hole by using a knife or similar tool.
• debase — To debase something means to reduce its value or quality.
• debilitate — If you are debilitated by something such as an illness, it causes your body or mind to become gradually weaker.
• devitalize — to lower or destroy the vitality of; make weak or lifeless
• droop — to sag, sink, bend, or hang down, as from weakness, exhaustion, or lack of support.
• enervate — Cause (someone) to feel drained of energy or vitality; weaken.
• exhaust — Drain (someone) of their physical or mental resources; tire out.
• faint — lacking brightness, vividness, clearness, loudness, strength, etc.: a faint light; a faint color; a faint sound.
• impoverish — to reduce to poverty: a country impoverished by war.
• invalidate — to render invalid; discredit.
• languish — to be or become weak or feeble; droop; fade.
• limp — to walk with a labored, jerky movement, as when lame.
• lose — to come to be without (something in one's possession or care), through accident, theft, etc., so that there is little or no prospect of recovery: I'm sure I've merely misplaced my hat, not lost it.
• minimize — to reduce to the smallest possible amount or degree.
• minimise — to reduce to the smallest possible amount or degree.
• mitigate — to lessen in force or intensity, as wrath, grief, harshness, or pain; moderate.
• moderate — kept or keeping within reasonable or proper limits; not extreme, excessive, or intense: a moderate price.
• relapse — to fall or slip back into a former state, practice, etc.: to relapse into silence.
• relax — to make less tense, rigid, or firm; make lax: to relax the muscles.
• temper — a particular state of mind or feelings.
• thin — having relatively little extent from one surface or side to the opposite; not thick: thin ice.
• tyre — to furnish with tires.
• tire — Archaic. to dress (the head or hair), especially with a headdress.
• totter — to walk or go with faltering steps, as if from extreme weakness.