The weight of a cat on your lap might not bother you, but the weight of your 156 pound Rottweiler? Oh boy. Weight refers to the heaviness of a person or object.

In physics, weight is a precise measurement based on the force that gravity exerts on a mass. Got that? All meanings of the word weight are related to this sense of heaviness. Something that is important, like testimony at a trial or a serious conversation, can be described as having weight, even if you can't put it on a scale.

Definitions of weight
  1. noun
    the vertical force exerted by a mass as a result of gravity
    see moresee less
    show 11 types...
    hide 11 types...
    body weight
    the weight of a person's body
    dead weight
    a heavy motionless weight
    heaviness, weightiness
    the property of being comparatively great in weight
    weight expressed in pounds
    the weight of a motor vehicle, railroad car, or aircraft without its fuel or cargo
    the weight of the payload of a missile (not including the weight of the rocket)
    lightness, weightlessness
    the property of being comparatively small in weight
    reporting weight
    a person's body weight (as an athlete's) at the beginning of the season (when first reporting for practice)
    heft, heftiness, massiveness, ponderosity, ponderousness
    the property of being large in mass
    exceeding in heaviness; having greater weight
    airiness, buoyancy
    the property of something weightless and insubstantial
    type of:
    physical property
    any property used to characterize matter and energy and their interactions
  2. noun
    an oppressive feeling of heavy force
    “bowed down by the weight of responsibility”
    see moresee less
    type of:
    oppression, oppressiveness
    a feeling of being oppressed
  3. verb
    weight down with a load
    synonyms: burden, burthen, weight down
    see moresee less
    disburden, unburden
    take the burden off; remove the burden from
    load with excessive weight
    weight with lead
    load or burden; encumber
    type of:
    fill or load to capacity
  4. noun
    an artifact that is heavy
    see moresee less
    show 17 types...
    hide 17 types...
    a hanging weight, especially a metal ball on a string
    balance, counterbalance, counterpoise, counterweight, equaliser, equalizer
    a weight that balances another weight
    burden, load, loading
    weight to be borne or conveyed
    a weight added to the scale to reach a required weight
    a weight used to hold down a stack of papers
    a weight that sinks (as to hold nets or fishing lines under water)
    a variant of `burden'
    dead load
    a constant load on a structure (e.g. a bridge) due to the weight of the supported structure itself
    kite tail
    a bob on a kite to provide balance
    live load, superload
    a variable load on a structure (e.g. a bridge) such as moving traffic
    any load that is difficult to carry
    overburden, overload
    an excessive burden
    an electrical load that exceeds the available electrical power
    plumb, plumb bob, plummet
    the metal bob of a plumb line
    sash weight
    a counterweight for a sliding sash
    sounding lead
    a metal bob at the end of a sounding line
    (chemical analysis) a counterweight used in chemical analysis; consists of an empty container that counterbalances the weight of the container holding chemicals
    type of:
    artefact, artifact
    a man-made object taken as a whole
  5. noun
    a unit used to measure weight
    “he placed two weights in the scale pan”
    synonyms: weight unit
    see moresee less
    show 22 types...
    hide 22 types...
    troy unit
    any of the unit of the troy system of weights
    apothecaries' unit, apothecaries' weight
    any weight unit used in pharmacy; an ounce is equal to 480 grains and a pound is equal to 12 ounces
    a unit of weight used in some Spanish speaking countries
    cattie, catty
    any of various units of weight used in southeastern Asia (especially a Chinese measure equal to 500 grams)
    the weight of a liter of hydrogen (at 0 centigrade and 760 millimeters pressure)
    the weight of a frail (basket) full of raisins or figs; between 50 and 75 pounds
    a unit of weight equal to 4,000 pounds
    a unit of weight used in Asia; has different values in different countries
    a Greek unit of weight equal to one tenth of a gram
    a Turkish unit of weight equal to about 2.75 pounds
    a unit of weight used in some parts of Asia; approximately equal to 133 pounds (the load a grown man can carry)
    a Russian unit of weight equal to approximately 36 pounds
    a unit of weight used in some Moslem countries near the Mediterranean; varies between one and five pounds
    a unit of weight used in east Asia approximately equal to 1.3 ounces
    a unit of weight for wool equal to about 28 pounds
    a weight of 28 pounds; sometimes imposed as a handicap in a horse race (such as a steeplechase)
    1/60 dram; equals an avoirdupois grain or 64.799 milligrams
    a unit of apothecary weight equal to 20 grains
    a unit of apothecary weight equal to 24 grains
    drachm, drachma, dram
    a unit of apothecary weight equal to an eighth of an ounce or to 60 grains
    apothecaries' ounce, ounce, troy ounce
    a unit of apothecary weight equal to 480 grains or one twelfth of a pound
    apothecaries' pound, troy pound
    an apothecary weight equal to 12 ounces or 373.242 grams
    type of:
    unit, unit of measurement
    any division of quantity accepted as a standard of measurement or exchange
  6. noun
    a system of units used to express the weight of something
    synonyms: system of weights
    see moresee less
    avoirdupois, avoirdupois weight
    a system of weights based on the 16-ounce pound (or 7,000 grains)
    troy, troy weight
    a system of weights used for precious metals and gemstones; based on a 12-ounce pound and an ounce of 480 grains
    type of:
    metric, system of measurement
    a system of related measures that facilitates the quantification of some particular characteristic
  7. noun
    sports equipment used in calisthenic exercises and weightlifting; it is not attached to anything and is raised and lowered by use of the hands and arms
    synonyms: exercising weight, free weight
    see moresee less
    a bar to which heavy discs are attached at each end; used in weightlifting
    an exercising weight; two spheres connected by a short bar that serves as a handle
    type of:
    sports equipment
    equipment needed to participate in a particular sport
  8. noun
    the relative importance granted to something
    “his opinion carries great weight
    synonyms: weightiness
    see moresee less
    type of:
    the quality of being important and worthy of note
  9. noun
    (statistics) a coefficient assigned to elements of a frequency distribution in order to represent their relative importance
    synonyms: weighting
    see moresee less
    type of:
    a constant number that serves as a measure of some property or characteristic
  10. verb
    present with a bias
    synonyms: angle, skew, slant
    see moresee less
    type of:
    bias, predetermine
    cause to be biased
Word Family

Test prep from the experts

Boost your test score with programs developed by’s experts.

  • Proven methods: Learn faster, remember longer with our scientific approach.
  • Personalized plan: We customize your experience to maximize your learning.
  • Strategic studying: Focus on the words that are most crucial for success.


  • Number of words: 500+
  • Duration: 8 weeks or less
  • Time: 1 hour / week


  • Number of words: 500+
  • Duration: 10 weeks or less
  • Time: 1 hour / week


  • Number of words: 700+
  • Duration: 10 weeks
  • Time: 1 hour / week