'Lewdness' definitions:

Definition of 'lewdness'

noun

The trait of behaving in an obscene manner [syn: obscenity, lewdness, bawdiness, salaciousness, salacity]

From: GCIDE

Lewd \Lewd\ (l[=u]d), a. [Compar. Lewder (-[~e]r); superl. Lewdest.] [OE. lewed, lewd, lay, ignorant, vile, AS. l[=ae]wed laical, belonging to the laity.]
1. Not clerical; laic; laical; hence, unlearned; simple. [Obs.] [1913 Webster]
For if a priest be foul, on whom we trust, No wonder is a lewed man to rust. --Chaucer. [1913 Webster]
So these great clerks their little wisdom show To mock the lewd, as learn'd in this as they. --Sir. J. Davies. [1913 Webster]
2. Belonging to the lower classes, or the rabble; idle and lawless; bad; vicious. [Archaic] --Chaucer. [1913 Webster]
But the Jews, which believed not, . . . took unto them certain lewd fellows of the baser sort, . . . and assaulted the house of Jason. --Acts xvii. 5. [1913 Webster]
Too lewd to work, and ready for any kind of mischief. --Southey. [1913 Webster]
3. Given to the promiscuous indulgence of lust; dissolute; lustful; libidinous. --Dryden. [1913 Webster]
4. Suiting, or proceeding from, lustfulness; involving unlawful sexual desire; as, lewd thoughts, conduct, or language. [1913 Webster]
Syn: Lustful; libidinous; licentious; profligate; dissolute; sensual; unchaste; impure; lascivious; lecherous; rakish; debauched. -- {Lewd"ly}, adv. -- {Lewd"ness}, n. [1913 Webster]

Lewdness (Acts 18:14), villany or wickedness, not lewdness in the modern sense of the word. The word "lewd" is from the Saxon, and means properly "ignorant," "unlearned," and hence low, vicious (Acts 17:5).