You can overdose on coffee if you drink about 30 cups in a brief period to get close to a lethal dosage of caffeine.
ROIL
roil, rile
(verb) make turbid by stirring up the sediments of
churn, boil, moil, roil
(verb) be agitated; “the sea was churning in the storm”
Source: WordNet® 3.1
Etymology
Verb
roil (third-person singular simple present roils, present participle roiling, simple past and past participle roiled)
(transitive) To render turbid by stirring up the dregs or sediment of.
Synonym: agitate
(transitive) To annoy; to make someone angry.
Synonyms: irritate, rile
(intransitive) To bubble, seethe.
(obsolete, intransitive) To wander; to roam.
(obsolete, UK, dialect, intransitive) To romp.
Anagrams
• Loir, Lori, loir
Source: Wiktionary
Roil, v. t. [imp. & p. p. Roiled; p. pr. & vb. n. Roiling.] Etym: [Cf. OE. roilen to wander; possibly fr. OF. roeler to roll, equiv. to F. rouler. See Roll, v., and cf. Rile.]
1. To render turbid by stirring up the dregs or sediment of; as, to roil wine, cider, etc. , in casks or bottles; to roil a spring.
2. To disturb, as the temper; to ruffle the temper of; to rouse the passion of resentment in; to perplex. That his friends should believe it, was what roiled him [Judge Jeffreys] exceedingly. R. North.
Note: Provincial in England and colloquial in the United States. A commoner, but less approved, form is rile.
Roil, v. i.
1. To wander; to roam. [Obs.]
2. To romp. [Prov.Eng.] Halliwell.
Source: Webster’s Unabridged Dictionary 1913 Edition
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