• WordNet 3.6
    • v deepen become more intense "The debate intensified","His dislike for raw fish only deepened in Japan"
    • v deepen make more intense, stronger, or more marked "The efforts were intensified", "Her rudeness intensified his dislike for her","Pot smokers claim it heightens their awareness","This event only deepened my convictions"
    • v deepen become deeper in tone "His voice began to change when he was 12 years old","Her voice deepened when she whispered the password"
    • v deepen make deeper "They deepened the lake so that bigger pleasure boats could use it"
    • ***
Webster's Revised Unabridged Dictionary
    • v. i Deepen To become deeper; as, the water deepens at every cast of the lead; the plot deepens. "His blood-red tresses deepening in the sun."
    • Deepen To make darker or more intense; to darken; as, the event deepened the prevailing gloom. "You must deepen your colors."
    • Deepen To make deep or deeper; to increase the depth of; to sink lower; as, to deepen a well or a channel. "It would . . . deepen the bed of the Tiber."
    • Deepen To make more grave or low in tone; as, to deepen the tones of an organ. "Deepens the murmur of the falling floods."
    • Deepen To make more poignant or affecting; to increase in degree; as, to deepen grief or sorrow.
    • ***
Century Dictionary and Cyclopedia
    • deepen To become deep or deeper, in any sense; increase in depth.
    • deepen To make deep or deeper, in any sense.
    • ***
Chambers's Twentieth Century Dictionary
    • v.t Deepen to make deeper in any sense: to increase
    • ***


  • Kahlil Gibran
    “Let there be no purpose in friendship save the deepening of the spirit.”
  • Orison Swett Marden
    “If you do not feel yourself growing in your work and your life broadening and deepening, if your task is not a perpetual tonic to you, you have not found your place.”
  • Philip Larkin
    Philip Larkin
    “Man hands on misery to man. It deepens like a coastal shelf. Get out as early as you can, and don't have any kids yourself.”
  • Charles Morgan
    Charles Morgan
    “As knowledge increases, wonder deepens.”


Chambers's Twentieth Century Dictionary
A.S. deóp; Ger. tief. Cf. Dip, Dive.


In literature:

He saw that his conduct in the night and the storm had made an impression upon his captors, and he meant to deepen it.
"The Riflemen of the Ohio" by Joseph A. Altsheler
After it is entirely stitched up there will still be little places which will require deepening and filling up.
"Practical Taxidermy" by Montagu Browne
The amazement in the wide eyes had deepened to a look of rapture.
"A Son of Hagar" by Sir Hall Caine
She felt the gloom in her heart deepen as the day went on.
"The Chautauqua Girls At Home" by Pansy, AKA Isabella M. Alden
Each segar represents a battle, deepening in intensity according to the number.
"Modern Women and What is Said of Them" by Anonymous
Through Fifteenth Street the sun poured a red light that deepened as the mist rose from the docks.
"A Young Man in a Hurry" by Robert W. Chambers
With the passing minutes the lines deepened on his haggard countenance, his expression perceptibly aged.
"Mountain Blood" by Joseph Hergesheimer
A few bars of gold still lingered in the western sky, deepening as the world moved over.
"Colorado Jim" by George Goodchild
Again she glanced at his face, and felt her interest deepen tenfold.
"The Sign of the Spider" by Bertram Mitford
The pelting rain and deepening chill made the little home a very snug nest that night.
"Winning the Wilderness" by Margaret Hill McCarter
Later on the glaciers of several successive epochs greatly widened the valley, and measurably deepened it, making it U-shaped.
"The Book of the National Parks" by Robert Sterling Yard
In the silence that followed Armstrong looked at his friend opposite, the nervous furrow between his eyes deepening.
"The Dominant Dollar" by Will Lillibridge
The Russian's reference to Mascola caused the furrows in Blagg's brow to deepen.
"El Diablo" by Brayton Norton
The two vertical lines above his fleshy nose deepened.
"A Modern Mercenary" by Kate Prichard and Hesketh Vernon Hesketh-Prichard
It could only deepen the agony of the animal without relieving him in the least.
"The Young Ranchers" by Edward S. Ellis
The General's excitement grew worse, and was deepening into frenzy.
"The Cryptogram" by James De Mille
The Tartar army appeared as a darkness across the eastern horizon, deepening as it spread.
"The Saracen: Land of the Infidel" by Robert Shea
The sun still shone on the cliffs above the great canyon, but in the spaces below the shadows were deepening.
"The Bridge of the Gods" by Frederic Homer Balch
No faintest tinge deepens the ordinary pallor of her cheeks.
"Rossmoyne" by Unknown
As the twilight deepened, we drew nearer together, for comradeship meant protection.
"The Price of the Prairie" by Margaret Hill McCarter

In poetry:

Darkly the clouds were flocking,
Shadows moved and deepened,
Then paused; the poplar's rocking
Ceased; the light hung still
"The Fugitive" by John Freeman
But I dream!--The dusk, upbraiding,
Deepens without moon or star;
Darkness and my sorrow aiding,
We but fading phantoms are.
"One Day And Another: A Lyrical Eclogue – Part V" by Madison Julius Cawein
The present horror deepened all
The fears her childhood knew;
The awe wherewith the air was filled
With every breath she drew.
"The Witch of Wenham" by John Greenleaf Whittier
Land of the gentle and brave!
Our love is as wide as thy woe;
It deepens beside every grave
Where the heart of a hero lies low.
"The Land We Love" by Abram Joseph Ryan
Yes! oft my tranced fancy sees,
Mid evening's deepening shade,
Thy airy form--and, in the breeze,
Thy voice I hear, sweet maid!
"Ellen" by James Avis Bartley
Over Hill and over hollow,
Shunning wide the lighted towns,
Faster still, the twilight deepens,
Till you whistle o'er the downs.
"The Four Winds" by R S Ward

In news:

Volumes Plunge at EBS as FX Market Stress Deepening .
EBS Volumes Plunge as FX Market Stress Deepening .
The project would deepen the harbor to serve large ships.
Harbor deepening moves to fast track.
In former Gaddafi stronghold, a sign of Libya's deepening divide.
Deepening Savannah's harbor: Time to start digging.
Officials hope harbor- deepening decision signals end to disputes.
Georgia officials hope that last week's final federal approval of the deepening of the Savannah River ship channel will lead to the end of disputes with opponents in South Carolina trying to halt the project.
Georgia money could help jumpstart harbor deepening .
People who track the St Johns River's health say an unfinished Army Corps of Engineers environmental study is raising concerns about effects of possibly deepening Jacksonville's port.
Work on $300 million Charleston Harbor deepening moves into the water with surveys.
Deepening your experience of God.
Lebanon police Officer Andy Harner fired, deepening shortage.
7.5 Million Okayed for LA Main Channel Deepening .
The Los Angeles Harbor Commission approved $7.5 million at its Sept 20 meeting for the final phase of the Port of Los Angeles Main Channel Deepening Project (MCDP).

In science:

Experiments with them can contribute substantially to deepen our fundamental knowledge in atomic, nuclear and particle physics.
Low Energy Antiproton Experiments -- A Review
We can look forward to future precision p experiments continuing to deepen insights in fundamental interactions and symmetries, providing important data and parameters with standard theory and providing improved searches for new physics.
Low Energy Antiproton Experiments -- A Review
It has stimulated theorists to deepen their insight into the issue of when a heavy quark should be treated as a parton, and it has provoked novel proposals to explain the hadronization of heavy quarks.
Heavy Quarks: Summary Report
Their interpretation requires both a deepening and a widening of available theoretical tools.
Spin Physics
To summarize, just as in physics, even if the system we are interested in is in equilibrium most of the time, there is a need for a non-equilibrium theory of economics, to deepen our understanding of the state of equilibrium.
Time and symmetry in models of economic markets
Compared to the earlier studies in , the solution of the problems in the present paper requires a much deepen and delicate analysis.
Optimal control of a large dam, taking into account the water costs [New Edition]
The Orbital Model of Elementary Particles allows deepening the physical significance of the gyromagnetic g-factor by correlating it to structural and inner dynamical parameters.
The proton gyromagnetic g-factor: an electromagnetic model
BABAR dataset of 468 million BB pairs will only deepen our understanding of the CKM mechanism.
Time-dependent \g/$\phi_3$ measurements by Babar
In recent years, numerical relativity simulations of BHs have also deepened our insight into a variety of astrophysical systems.
Numerical simulations of black-hole binaries and gravitational wave emission
We hope that these articles will lead to the identification of further problems where the power of the duality diagram approach can be realized to deepen the analyses of data from multiple sources, types, and dimensions.
Special section on modern multivariate analysis
Recent theoretical and experimental developments have significantly increased our ability to perform quantitative tests and have deepened our understanding of hadronic interactions.
QCD Tests in Proton-Antiproton Collisions
Besides, the necessity, expressed in the previous chapters, of deepening the dynamical problem of halo formation, remains.
The Cosmological Mass Function
The dynamical MF theory is a promising starting point for a further deepening of the MF problem and its applications.
The Cosmological Mass Function
The reflection continuum is affected mainly at the iron edge, which of course deepens with increasing iron abundance (see Magdziarz & Zdziarski 1995 and relative xspec codes): between 7.1 and, say, 20 keV the reflection continuum is then smaller for higher abundances.
Seyfert Galaxies and BeppoSAX
Hopefully, further theoretical as well as experimental works will clarify novel features of the noncollinear transitions, which might serve to enlarge and deepen our understanding of phase transitions and critical phenomena.
Universality of phase transitions of frustrated antiferromagnets