The Collaborative International Dictionary
Felonious \Fe*lo"ni*ous\, a. Having the quality of felony; malignant; malicious; villainous; traitorous; perfidious; in a legal sense, done with intent to commit a crime; as, felonious homicide.
O thievish Night,
Why should'st thou, but for some felonious end,
In thy dark lantern thus close up the stars?
--Milton.
-- Fe*lo"ni*ous*ly, adv. -- Fe*lo"ni*ous*ness, n.
Wiktionary
adv. In a felonious manner; in a manner that constitutes a felony.
Usage examples of "feloniously".
That Lizzie Andrew Borden of Fall River, in the county of Bristol, at Fall River in the county of Bristol, on the fourth day of August, in the year eighteen hundred and ninety-two, in and upon one Andrew Jackson Borden, feloniously, willfully and of her malice aforethought, an assault did make, and with a certain weapon, to wit, a sharp cutting instrument, the name and a more particular description of which is to the Jurors unknown, him, the said Andrew Jackson Borden feloniously, willfully and of her malice aforethought did strike, cutting, beating and bruising, in and upon the head of him, the said Andrew Jackson Borden, divers, to wit, ten mortal wounds, of which said mortal wounds the said Andrew Jackson Borden then and there instantly died.
And after, in the quest of the Sangreal, cowardly and feloniously they slew Dinadan, the which was great damage, for he was a great bourder and a passing good knight.
And at his departing there met him Sir Gawaine and his brethren, and with great pain they slew him feloniously, unto all good knights' great damage.
Aurora Delaine, nineteen, was charged with feloniously stealing and conveying certain articles, the property of the Universal Stores, to wit thirty-five yards of bock muslin, ten pairs of gloves, a sponge, two gimlets, five jars of cold cream, a copy of the Clergy List, three hat-guards, a mariner’s compass, a box of drawing-pins, an egg-breaker, six blouses, and a cabman’s whistle.
It is unconscionable, that nineteen healthy young athletes should, with weapons in their hands, feloniously fall on two middle-aged foreigners who were in poor physical condition, and who had only recently gotten out of their sickbeds after very serious injuries.
The offense charged, in the indictments printed by Calef, was that the accused “wickedly and feloniously hath used certain detestable arts, called witchcrafts and sorceries, by which said wicked arts” the said bewitched “was and is tortured, afflicted, pined, consumed, wasted and tormented against the peace of our sovereign lord and lady, the King and Queen, and against the form of the statute in that case made and provided.