The difference between Powerful and Weak
When used as adjectives, powerful means having, or capable of exerting power, potency or influence, whereas weak means lacking in force (usually strength) or ability.
check bellow for the other definitions of Powerful and Weak
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Powerful as an adjective:
Having, or capable of exerting power, potency or influence.
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Powerful as an adjective (mining):
Large; capacious; said of veins of ore.
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Powerful as an adverb (Southern US):
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Weak as an adjective:
Lacking in force (usually strength) or ability.
Examples:
"The child was too weak to move the boulder."
"They easily guessed his weak computer password."
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Weak as an adjective:
Unable to sustain a great weight, pressure, or strain.
Examples:
"a weak timber; a weak rope"
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Weak as an adjective:
Unable to withstand temptation, urgency, persuasion, etc.; easily impressed, moved, or overcome; accessible; vulnerable.
Examples:
"weak resolutions; weak virtue"
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Weak as an adjective:
Dilute, lacking in taste or potency.
Examples:
"We were served stale bread and weak tea."
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Weak as an adjective (grammar):
Displaying a particular kind of inflection, including: Regular in inflection, lacking vowel changes and having a past tense with -d- or -t-. Showing less distinct grammatical endings. Definite in meaning, often used with a definite article or similar word.
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Weak as an adjective (chemistry):
That does not ionize completely into anions and cations in a solution.
Examples:
"a weak acid; a weak base"
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Weak as an adjective (physics):
One of the four fundamental forces associated with nuclear decay.
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Weak as an adjective (slang):
Bad or uncool.
Examples:
"This place is weak."
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Weak as an adjective (mathematics, logic):
Having a narrow range of logical consequences; narrowly applicable. (Often contrasted with a statement which implies it.)
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Weak as an adjective:
Resulting from, or indicating, lack of judgment, discernment, or firmness; unwise; hence, foolish.
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Weak as an adjective:
Not having power to convince; not supported by force of reason or truth; unsustained.
Examples:
"The prosecution advanced a weak case."
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Weak as an adjective:
Lacking in vigour or expression.
Examples:
"a weak sentence; a weak style"
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Weak as an adjective:
Not prevalent or effective, or not felt to be prevalent; not potent; feeble.
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Weak as an adjective (stock exchange):
Tending towards lower prices.
Examples:
"a weak market; wheat is weak at present"
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Weak as an adjective (photography):
Lacking contrast.
Examples:
"a weak negative"