You can overdose on coffee if you drink about 30 cups in a brief period to get close to a lethal dosage of caffeine.
ANTAGONIST
antagonist
(noun) a drug that neutralizes or counteracts the effects of another drug
antagonist
(noun) a muscle that relaxes while another contracts; “when bending the elbow the triceps are the antagonist”
adversary, antagonist, opponent, opposer, resister
(noun) someone who offers opposition
Source: WordNet® 3.1
Etymology
Noun
antagonist (plural antagonists)
An opponent or enemy.
One who antagonizes or stirs.
(biochemistry) A chemical that binds to a receptor but does not produce a physiological response, blocking the action of agonist chemicals.
(anatomy) A muscle that acts in opposition to another.
Antonyms
• protagonist
• agonist (biochemistry)
Anagrams
• stagnation
Source: Wiktionary
An*tag"o*nist, n. Etym: [L. antagonista, Gr. antagoniste. See Antagonism.]
1. One who contends with another, especially in combat; an adversary; an opponent. Antagonist of Heaven's Almigthy King. Milton. Our antagonists in these controversies. Hooker.
2. (Anat.)
Definition: A muscle which acts in opposition to another; as a flexor, which bends a part, is the antagonist of an extensor, which extends it.
3. (Med.)
Definition: A medicine which opposes the action of another medicine or of a poison when absorbed into the blood or tissues.
Syn.
– Adversary; enemy; opponent; toe; competitor. See Adversary.
An*tag"o*nist, a.
Definition: Antagonistic; opposing; counteracting; as, antagonist schools of philosophy.
Source: Webster’s Unabridged Dictionary 1913 Edition
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COVERT
(adjective) secret or hidden; not openly practiced or engaged in or shown or avowed; “covert actions by the CIA”; “covert funding for the rebels”
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