adjective, length·i·er, length·i·est.
Examples from the Web for lengthily
If it had been on the rotation of my crops, I would have answered myself, lengthily perhaps, but certainly con gusto.
Never before in his life had Mark spoken so eloquently nor so lengthily.Janet of the Dunes|Harriet T. Comstock
He lengthily accused Grousset of having stolen paper in order to print his journal; another of having lived with a mistress.History of the Commune of 1871|P. Lissagary
In any case, it is the one which has been the most perseveringly, lengthily and carefully studied by highly competent men.Mrs. Piper & the Society for Psychical Research|Michael Sage
A Conservative speech is as accurately (though perhaps not as lengthily) reported in a Liberal paper as in one of its own colour.The Land of Contrasts|James Fullarton Muirhead
British Dictionary definitions for lengthily
adjective lengthier or lengthiest
Word Origin and History for lengthily
This word has been very common among us, both in writing and in the language of conversation; but it has been so much ridiculed by Americans as well as Englishmen, that in writing it is now generally avoided. Mr. Webster has admitted it into his dictionary; but as need hardly be remarked it is not in any of the English ones. It is applied by us, as Mr. Webster justly observes, chiefly to writings or discourses. Thus we say, a lengthy pamphlet, a lengthy sermon, &c. The English would say, a long or (in the more familiar style) a longish sermon. [John Pickering, "A Vocabulary, or Collection of Words and Phrases Which Have Been Supposed to be Peculiar to the United States of America," Boston, 1816]
Related: Lengthily; lengthiness.