She walked lightsomely down the long staircase.    From Wordnet, Princeton University. 

The sun of autumn shone, lying like a benediction upon the land whose fruits were gathered; among the hips and haws in the hedges the birds, their family cares all over, sang lightsomely, with vacant hearts.    From Wordnik.com.  [A Sheaf of Corn] Reference

The last thing one hears of her, she is tripping up stairs to bed, talking lightsomely or warbling; and one meets her in the morning, the very image of bright morn itself, smiling briskly at you, so that one takes her for a promise of cheerfulness through the day.    From Wordnik.com.  [The Atlantic Monthly, Volume 17, No. 103, May, 1866] Reference

'Guessed the work was going well; you sing so lightsomely to-day, Grete!.    From Wordnik.com.  [Complete Short Works of George Meredith] Reference

Hawthorne said: "Happiness may walk soberly in dark attire as well as dance lightsomely in a gala-dress.".    From Wordnik.com.  [Customs and Fashions in Old New England] Reference

Roiled core duo laptop this damages myotis to be lightsomely wildcat, as whatnot anaglyphy to thirdhand the incompleteness of the unbearably one.    From Wordnik.com.  [Rational Review] Reference

The last thing one hears of her, she is tripping up stairs to bed, talking lightsomely or warbling; and one meets her in the morning, the very image of bright morn itself, smiling briskly at you, so that one takes her for.    From Wordnik.com.  [Passages from the American Notebooks, Volume 2.] Reference

I shiver and think it time to be disconsolate, but, taking a farewell glance at dead Nature in her shroud, I perceive a flock of snowbirds skimming lightsomely through the tempest and flitting from drift to drift as sportively as swallows in the delightful prime of summer.    From Wordnik.com.  [Twice Told Tales] Reference

Mrs. Plummet shed real tears when I told her my good news at six o'clock that night; and more tears a fortnight later when I moved out of my little hall bedroom, and my feather-weight trunk, lightsomely balanced on the shoulders of one man, was conveyed to the express-wagon and thence to new lodgings in Irving Place.    From Wordnik.com.  [The Fifth Wheel A Novel] Reference

Gray, sullen clouds hang about the sky, or sometimes cover it with a uniform dulness; at other times, the portions towards the sun gleam almost lightsomely; now, there may be an airy glimpse of clear blue sky in a fissure of the clouds; now, the very brightest of sunshine comes out all of a sudden, and gladdens everything.    From Wordnik.com.  [Passages from the English Notebooks, Volume 2.] Reference

Having made sure that the bed on which it rested was firm and moderately dry, he covered the box with a strewing of last year's leaves, cunningly trailed a bramble or two over it, and pursued his way more lightsomely, albeit still under some oppression: for the house stood formidably high, and he feared all converse with women.    From Wordnik.com.  [Hocken and Hunken] Reference

As lightsomely I glowr'd abroad.    From Wordnik.com.  [The Complete Works of Robert Burns: Containing his Poems, Songs, and Correspondence. With a New Life of the Poet, and Notices, Critical and Biographical by Allan Cunningham] Reference

And bugles ringing lightsomely. '.    From Wordnik.com.  [Marmion] Reference

As lightsomely I glowr’d abroad, 10.    From Wordnik.com.  [The Holy Fair] Reference

So lightsomely dropped in thy lordly back.    From Wordnik.com.  [The Bon Gaultier Ballads] Reference