Noun agent has 6 senses
  1. agent - an active and efficient cause; capable of producing a certain effect; "their research uncovered new disease agents"
    --1 is a kind of
    causal agent, cause, causal agency
    --1 has particulars:
     vasoconstrictor, vasoconstrictive; biological agent, biohazard; eliminator; impairer; infectious agent, infective agent; lethal agent; motor; mutagen; quickener, invigorator, enlivener; relaxer; repressor, represser; retardant, retardent, retardation; satisfier; shortener; stressor; teratogen; vector, transmitter; weakener
  2. agent - a substance that exerts some force or effect
    --2 is a kind of
    causal agent, cause, causal agency
    --2 has particulars:
     antiflatulent; antifungal, antifungal agent, fungicide, antimycotic, antimycotic agent; blocker, blocking agent; disinfectant, germicide, antimicrobic, antimicrobial; drug; vermicide; antacid, gastric antacid, alkalizer, alkaliser, antiacid; bacteriostat; bleaching agent, bleach, blanching agent, whitener; chemical agent; coagulant, coagulator; coolant; dilutant, diluent, thinner; emmenagogue; galactagogue; hypnagogue; hypoglycemic agent, hypoglycaemic agent; inducer; lactifuge; lactogen; mitogen; nerve gas, nerve agent; precipitant; solvating agent; viricide, virucide
  3. agent - a representative who acts on behalf of other persons or organizations
    --3 is a kind of
    representative
    --3 has particulars:
     business agent; literary agent; bailee; booker, booking agent; deputy, surrogate; employment agent; freight agent; government agent; handler; mill agent; next friend; parliamentary agent; proxy, placeholder, procurator; purchasing agent; secret agent, intelligence officer, intelligence agent, operative; shipping agent; shopper; special agent; talent agent; universal agent, general agent
  4. agent, factor, broker - a businessman who buys or sells for another in exchange for a commission
    --4 is a kind of businessperson, bourgeois
    --4 is a member of brokerage, brokerage firm, securities firm
    --4 has particulars:
     auctioneer; insurance broker, insurance agent, general agent, underwriter; investment banker, underwriter; realtor, real estate broker, real estate agent, estate agent, land agent, house agent; ship broker; stockbroker; syndic; travel agent
  5. agent, federal agent - any agent or representative of a federal agency or bureau
    --5 is a kind of official, functionary
    --5 has particulars:
     Indian agent; Federal, Fed, federal official; trustbuster
  6. agentive role, agent - the semantic role of the animate entity that instigates or causes the hapening denoted by the verb in the clause
    --6 is a kind of semantic role, participant role
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