adv. [f. LENGTHY a. + -LY2.] In a lengthy manner; at length.
1787. T. Jefferson, Writ. (1859), II. 334. I have written somewhat lengthily to Mr. Madison.
1827. Blackw. Mag., XXI. 729. Informing her very lengthily,to borrow an Americanism that her father has promised her hand.
1866. Geo. Eliot, F. Holt, II. xvi. 33. The reasons against it need not be urged lengthily.
1886. Manch. Exam., 21 May, 5/4, The case was lengthily and learnedly argued on both sides.