• WordNet 3.6
    • v weaken become weaker "The prisoner's resistance weakened after seven days"
    • v weaken lessen the strength of "The fever weakened his body"
    • v weaken reduce the level or intensity or size or scope of "de-escalate a crisis"
    • v weaken lessen in force or effect "soften a shock","break a fall"
    • v weaken destroy property or hinder normal operations "The Resistance sabotaged railroad operations during the war"
    • ***
Webster's Revised Unabridged Dictionary
  • Interesting fact: Earth's magnetic field has been weakening. It seems to have lost 15% of its strength since 1670. At the present rate of decrease, it will reach zero in 2,000 years. Between the years 3500 and 4500, the magnetic field will not be sufficiently strong enough to ward off charged radiation from outer space.
    • v. i Weaken To become weak or weaker; to lose strength, spirit, or determination; to become less positive or resolute; as, the patient weakened; the witness weakened on cross-examination. "His notion weakens , his discernings are lethargied."
    • Weaken To make weak; to lessen the strength of; to deprive of strength; to debilitate; to enfeeble; to enervate; as, to weaken the body or the mind; to weaken the hands of a magistrate; to weaken the force of an objection or an argument. "Their hands shall be weakened from the work, that it be not done."
    • Weaken To reduce in quality, strength, or spirit; as, to weaken tea; to weaken any solution or decoction.
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: Negative emotions such as anxiety and depression can weaken your immune system.
    • weaken To become weak or weaker: as, he weakens from day to day.
    • weaken To make weak or weaker; lesson or reduce the strength, power, ability, influence, or quality of: as, to weaken the body or the mind; to weaken a solution or infusion by dilution; to weaken the force of an argument.
    • ***
Chambers's Twentieth Century Dictionary
    • v.t Weaken to make weak: to reduce in strength or spirit
    • ***


  • Source Unknown
    Source Unknown
    “Anxiety is the rust of life, destroying its brightness and weakening its power. A childlike and abiding trust in Providence is its best preventive and remedy.”
  • Edgar Quinet
    “An effeminate education weakens both the mind and the body.”
  • Frederic-Cesar La Harpe
    Frederic-Cesar La Harpe
    “We always weaken everything we exaggerate.”
  • Jean Jacques Rousseau
    “A feeble body weakens the mind.”
  • Franklin D. Roosevelt
    “Human kindness has never weakened the stamina or softened the fiber of a free people. A nation does not have to be cruel in order to be tough.”
  • Charles De Montesquieu
    “Useless laws weaken the necessary laws.”


Chambers's Twentieth Century Dictionary
A.S. wác, pliant—wican, to yield; Dut. week, Ice. veikr, Ger. weich.


In literature:

O, yonder is thy calf, tied with a stout cord, and even now being weakened by it!
"The Mahabharata of Krishna-Dwaipayana Vyasa, Volume 1"
And shaking their bows capable of bearing much strain, those combatants began to shroud and weaken each other with their shafts.
"The Mahabharata of Krishna-Dwaipayana Vyasa, Volume 2"
To her credit, she always weakened when some young fellow got her in a corner and tried to push the flirting to extremes.
"The Rustlers of Pecos County" by Zane Grey
She did continue in expecting weakening.
"Matisse Picasso and Gertrude Stein" by Gertrude Stein
The shock and the chill of this solemn scene were too much for the old monarch's feeble frame and weakened mind.
"The Empire of Austria; Its Rise and Present Power" by John S. C. Abbott
The general condition of the rest of the men is fair, though much weakened by exposure and lack of food.
"A Man's Woman" by Frank Norris
Three plants in a pot are enough, and they must not be weakened by excessive heat.
"The Culture of Vegetables and Flowers From Seeds and Roots, 16th Edition" by Sutton and Sons
His struggle with the Pope weakened him; his submission to the Pope weakened him yet more.
"The Works of the Right Honourable Edmund Burke, Vol. VII. (of 12)" by Edmund Burke
Thus weakened forward, the loss of the foremast was an imminent certainty.
"Dan Merrithew" by Lawrence Perry
It will weaken you infinitely.
"The Young Man and the World" by Albert J. Beveridge

In poetry:

But generations go and come,
And suns arise and set in tears,
And we are weakened now and dumb,
Foregone the might of ancient years.
"Chanukah Thoughts" by Morris Rosenfeld
That freedom which all sorrows claim
She does for thy content resign;
Her piety itself would blame
If her regrets should weaken thine.
"An Ode - Presented To The King, On His Majesty's Arrival In Holland, After The Queen's Death" by Matthew Prior
Then came by one in mad distress,
'Haste, haste below, where strong arms weaken,
The fighting ones grow less and less!
Great cities of the world are taken!
"The Dreamers" by William Wilfred Campbell
So tired! so weary — The race — has been long,
And the paths have been rugged,
The winds have been strong, — And the heart it has weakened,
In tempests so strong.
"Catharine Of Arragon" by Eloise Alberta Bibb
Of all the ills that do befall,
Auld Nick is blamed, and ever shall--
He did the infant race enthral
When time began;
Brought death and trouble on us all, And weaken'd man.
"The Loss Of Man's Happiness" by Susannah Hawkins
Why is it that your name is on my tongue
When the gray dawn first creeps across the hill?
Why is it, ere the lark his song has sung,
Your voice is in my brain, and singing still
The old, old love that taunts my weakened will?
"Surrender" by Charles Hanson Towne

In news:

Cuts would further weaken our standing as a global power.
Ignorance about how we get right with God has weakened the church.
Bolaven weakens to tropical storm before hitting North Korea, China.
Euro Weakens on Economic Outlook.
The euro weakened after German services contracted last month, adding to speculation the European Central Bank will reduce interest rates tomorrow.
Consumer groups said Monday that the bill would weaken consumer protection for those who rely on landlines and jeopardize municipalities' ability to get educational and emergency services to residents.
Though Isaac has weakened, more could be on the way.
Fox's Bill O'Reilly brings on guests who deliver an alternate reality about Mitt Romney's weakened campaign, Howell Raines says.
We plant 25 lbs of oats per acre in a weakening third- or fourth-year conventional alfalfa stand.
Influence Weakens Amid Complexity Of Modern Market.
Victory of Muslim Brotherhood weakens army's hold over Egyptian political system.
In Tallahassee, Republicans Will Still Rule But With A Hand Weakened By Election.
At high risk are children under 5, people 65 and up, pregnant women and people with certain chronic medical conditions or weakened immune systems.
Group cites weakening economic outlook.
We have argued in the past that culture plays a major role in weakening contemporary commitment to marriage.

In science:

The “finitely presented” hypothesis in Theorem 12 cannot be weakened to “finitely generated”, since Diuobina’s example (discussed in §2) is abelianby-cyclic, namely Z[Z]-by-Z.
Problems on the geometry of finitely generated solvable groups
Remark 6.2 The condition ∇′ ∈ comp(∇) ∩ CE (Bk ) ⊂ C 1,r E (Bk ), i. e. ∇′ ∈ comp(∇) and additionally ∇′ smooth and satisfying (BK ) can be weakened to ∇′ ∈ comp(∇) ⊂ C 1,r E (Bk ).
Relative Zeta Functions, Determinants, Torsion, Index Theorems and Invariants for Open Manifolds
Section 1.3 introduces pseudo-distances, which are distances weakened to the properties essential in our context.
Distance Semantics for Belief Revision
Larger families correspond to weakenings of this property.
Connectives in Quantum and other Cumulative Logics
Proof : We shall show that ∼ satisfies Left Logical Equivalence, Right Weakening, Reflexivity, Cut and Cautious Monotonicity.
Connectives in Quantum and other Cumulative Logics