The difference between Healthy and Weak
When used as adjectives, healthy means enjoying health and vigor of body, mind, or spirit: well, whereas weak means lacking in force (usually strength) or ability.
check bellow for the other definitions of Healthy and Weak
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Healthy as an adjective:
Enjoying health and vigor of body, mind, or spirit: well.
Examples:
"ant unhealthy"
"He was father to three healthy kids."
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Healthy as an adjective:
Conducive to health.
Examples:
"synonyms: healthful"
"ant unhealthy"
"A healthy diet and exercise can help to maintain proper weight."
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Healthy as an adjective:
Evincing health.
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Healthy as an adjective (figuratively):
Significant, hefty; beneficial.
Examples:
"a healthy respect for authority"
"Sam unwrapped the sandwich and took a healthy bite out of the middle."
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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"