Adjective : a sound heart; a sound mind. ,a sound business; sound investments. ,sound judgment. ,sound advice. ,sound moral values. ,sound reasoning. ,sound sleep. ,a sound thrashing. ,a sound title to property.    From Dictionary.com. 

Adverb : sound asleep.    From Dictionary.com. 

World Economic Forum, Canada has the "soundest" banking system in the world.    From Wordnik.com.  [Trader's Narrative] Reference

That racket was enough to awaken the soundest sleeper.    From Wordnik.com.  [Fred Fenton on the Crew or, The Young Oarsmen of Riverport School] Reference

Hotel I enjoyed the soundest sleep since leaving home.    From Wordnik.com.  [A Tramp Through the Bret Harte Country] Reference

His soundest sleep is always obtained in the diligence.    From Wordnik.com.  [Blackwood's Edinburgh Magazine - Volume 55, No. 343, May 1844] Reference

It is allowed by the soundest philosophers that ridicule has.    From Wordnik.com.  [The Mirror of Taste, and Dramatic Censor, Vol. I, No. 4, April 1810] Reference

I will give you the soundest thrashing you ever had in your life!.    From Wordnik.com.  [Punch, or the London Charivari, Volume 101, August 29, 1891] Reference

From this flooring each selected the soundest stick he could find.    From Wordnik.com.  [Jack Haydon's Quest] Reference

Plot, style, and truthfulness are of the soundest British character.    From Wordnik.com.  [Publisher's Advertising (1872)] Reference

"But as I told you, he is the soundest sleeper I ever traveled with.".    From Wordnik.com.  [Wild Bill's Last Trail] Reference

But his jests were the vehicles for telling to them the soundest truths.    From Wordnik.com.  [Museum of Antiquity A Description of Ancient Life] Reference

All our soundest maxims of political economy are discarded and disgraced.    From Wordnik.com.  [Blackwood's Edinburgh Magazine, Volume 56, Number 349, November, 1844] Reference

The wisest and soundest method of solving our tax problem is through economy.    From Wordnik.com.  [US Presidential Inaugural Addresses] Reference

They're innocent enough -- really, they're the soundest of sound little nuts.    From Wordnik.com.  [The Shield of Silence] Reference

No remedy is known, but we advise the purchase of the soundest and best bulbs.    From Wordnik.com.  [The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition] Reference

The reports have been eagerly read and highly prized by the soundest educators.    From Wordnik.com.  [The New England Magazine, Volume 1, No. 5, Bay State Monthly, Volume 4, No. 5, May, 1886] Reference

Paglia's soundest point is to suggest that Gaga is closer in spirit to Bette Midler.    From Wordnik.com.  [Tom Gliatto: Lady Gaga and Camille Paglia] Reference

Often these time-honored combinations rest upon the soundest of dietetic principles.    From Wordnik.com.  [Vocational Guidance for Girls] Reference

And that will inevitably lead to an extension upon the soundest possible basis of the.    From Wordnik.com.  [Martin Luther King, Jr. Day, 1995, Memorial Issue] Reference

In this work we have some of the soundest and most valuable suggestions we have read.    From Wordnik.com.  [Cattle and Cattle-breeders] Reference

That night the boy was wakened out of his soundest sleep by screams for help in his room.    From Wordnik.com.  [The Book of Stories for the Story-teller] Reference

But the storm of criticism and condemnation which burst upon the platform from the soundest.    From Wordnik.com.  [The Life, Public Services and Select Speeches of Rutherford B. Hayes] Reference

'This is a very admirable and seasonable book, displaying much reading and the soundest views.    From Wordnik.com.  [The Hero of the Humber or the History of the Late Mr. John Ellerthorpe] Reference

The operations of Nature exhibit the soundest philosophy, and the most perfect examples of art.    From Wordnik.com.  [A Practical Enquiry into the Philosophy of Education] Reference

These the final words before the townsman-bandit had himself dropped off into soundest slumbers.    From Wordnik.com.  [Bakemono Yashiki (The Haunted House), Retold from the Japanese Originals Tales of the Tokugawa, Volume 2] Reference

Charles Lamb and Talfourd praise him as not only the most brilliant, but the soundest of critics.    From Wordnik.com.  [The Atlantic Monthly, Volume 06, No. 35, September, 1860] Reference

Opinions such as these are based on the soundest common sense, indeed no one could honestly oppose them.    From Wordnik.com.  [The Art of Living in Australia ; together with three hundred Australian cookery recipes and accessory kitchen information by Mrs. H. Wicken] Reference

Puritans were right who said, that the soundest conversions were those with which the law had most to do.    From Wordnik.com.  [The Wesleyan Methodist Pulpit in Malvern Sermons Preached at the Opening Services of the Wesleyan Methodist Chapel, in 1866] Reference

From one of the soundest pilots of the Royal Naval Air Service I heard his experience of the previous day.    From Wordnik.com.  [Some Naval Yarns] Reference

As for the nobleman himself, he declared that he was the happiest and soundest of all the Czar's subjects.    From Wordnik.com.  [Doctor Jones' Picnic] Reference

I was even then very much impressed with Mr. Hanna as a man of the very soundest judgment and common sense.    From Wordnik.com.  [Fifty Years of Public Service] Reference

The American people have always recognized that education is one of the soundest investments they can make.    From Wordnik.com.  [State of the Union Address (1790-2001)] Reference

That the project has the interest of our soundest statesmen and scholars may be seen from the fact that the President of the.    From Wordnik.com.  [The New England Magazine Volume 1, No. 6, June, 1886, Bay State Monthly Volume 4, No. 6, June, 1886] Reference

'Pinnacled dim in the intense inane' -- no contact can be wholesomer than the contact with Burns at his archest and soundest.    From Wordnik.com.  [Harvard Classics Volume 28 Essays English and American] Reference

In October 2008, in fact, the World Economic Forum proclaimed Canada to have the soundest banking system on the entire planet.    From Wordnik.com.  [Canada Grows Up] Reference

His moral and religious principles are not only unexceptionable, but they are founded on the soundest and most enlightened basis.    From Wordnik.com.  [Blackwood's Edinburgh Magazine, Volume 61, No. 379, May, 1847] Reference

The expense attendant upon such a modification of the executive department would be justified by the soundest principles of economy.    From Wordnik.com.  [State of the Union Address (1790-2001)] Reference

So he replaced his ankle band, locked the catch, and lay down to the soundest and most refreshing sleep he had enjoyed for many a night.    From Wordnik.com.  [In Clive's Command A Story of the Fight for India] Reference