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user

A user is someone who employs or uses a particular thing, like a user of nicotine or a user of an internet site. Since you are reading this, you are a user of Vocabulary.com. Congrats!

To use something is to employ it or operate it, so a user is someone who uses or takes advantage of something. If you have a computer and use it for anything, you're a computer user. If you play a video game, you're a video game user. As you can see, this word often applies to technology. That's why they call the first part of a login the username. The people who design technology always have to keep the users in mind; it's important to make tech gadgets that are user-friendly.

Definitions of user
  1. noun
    a person who makes use of a thing; someone who uses or employs something
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    types:
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    consumer
    a person who uses goods or services
    end user
    the ultimate user for which something is intended
    usufructuary
    someone who holds property by usufruct
    utiliser, utilizer
    someone who puts to good use
    wearer
    a person who wears or carries or displays something as a body covering or accessory
    chewer
    someone who chews (especially someone who chews tobacco)
    concert-goer, music lover
    someone who attends concerts
    client, customer
    someone who pays for goods or services
    drinker, imbiber, juicer, toper
    a person who drinks alcoholic beverages (especially to excess)
    drinker
    a person who drinks liquids
    eater, feeder
    someone who consumes food for nourishment
    prodigal, profligate, squanderer
    a recklessly extravagant consumer
    smoker, tobacco user
    a person who smokes tobacco
    snuff user, snuffer
    a person who uses snuff
    type of:
    individual, mortal, person, somebody, someone, soul
    a human being
  2. noun
    a person who uses something or someone selfishly or unethically
    synonyms: exploiter
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    type of:
    selfish person
    a person who is unusually selfish
  3. noun
    a person who takes drugs
    synonyms: drug user, substance abuser
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    types:
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    addict
    someone who is physiologically dependent on a substance; abrupt deprivation of the substance produces withdrawal symptoms
    acid head
    someone who takes LSD
    caffein addict, caffeine addict
    someone addicted to caffeine
    drug addict, junkie, junky
    a narcotics addict
    hash head
    a user of hashish
    pill head
    a consumer of amphetamine pills
    pothead
    someone who smokes marijuana habitually
    speed freak
    addict who habitually uses stimulant drugs (especially amphetamines)
    type of:
    individual, mortal, person, somebody, someone, soul
    a human being
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