doper

From dope (verb) +‎ -er.

doper (plural dopers)

1. (derogatory) One who uses performance enhancing substances for competitive gain, especially illegally.
   • 2003: Sam "I can't even explain what I'm feeling right now," says CLark in rec.skiing.snowboard

     Would you care to point to some proof other than the Canuck's positive back in Nagano? If you are using that as a basis then all sports would be riddled with "dopers" especially XC skiing.

   • 2006, Matt Seaton, Tour de farce, Guardian Unlimited:

     ...the testers are always in a race with the dopers and usually playing catch-up.

2. (derogatory) One who frequently uses recreational drugs; a druggie; a stoner.
   • 2003: Lt. John Hadily, ICE DESTROYS LIVES-TPD DOPERS IN DENIAL in talk.politics.drugs

     I will keep posting the fact that if you possess drugs where I am employed and you are caught I'll throw your sorry ass in a cage where the dopers belong.

   • 2006, Gene Seymour, “Clerks II”, in Newsday:

     With the Kwik-Mart leveled by fire, Dante and Randal's professional aspirations take a southerly route to a Mooby's fast-food restaurant where dopey dopers Jay (Jason Mewes) and Silent Bob (Smith) have followed with their boombox and illicit activities.

   • 2006:, Anthony Cormier, Father: 'We're here to find her body', HeradTribune.com

     Tamara Toy was a blue-eyed daughter of a preacher, growing up good and God-fearing but eventually getting lost along the way, falling in with dopers and felons and a petty crook who stole her heart.

3. (dated) A person employed to apply dope solution during aircraft manufacture.

• doper time

From dope (adjective) +‎ -er.

doper

1. comparative form of dope: more dope

• orped, roped, pro-ED, Pedro, Drope, repod, pored

• IPA^(key):

doper

1. second-person singular imperative of doprat

From Middle Dutch dôpere, from Old Dutch dōperi. Equivalent to dopen +‎ -er.

• IPA^(key): /ˈdoː.pər/

• Audio:

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• Hyphenation: do‧per
• Rhymes: -oːpər

doper m (plural dopers)

1. baptiser, one who baptises
2. (historical) Anabaptist

   Synonyms: anabaptist, doperse, herdoper, wederdoper

• doopsgezinde
• menist

• dopers

• Negerhollands: dooper

• dopingzondaar (whereas Dutch doper is a false friend of English doper as drug user)

Borrowed from English dope.

• IPA^(key): /dɔ.pe/

• Audio:

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• Audio (Canada):

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doper

1. to dope; to do doping
2. to boost (one's performance by doping)

• dopage

• “doper”, in Trésor de la langue française informatisé , 2012.