A man of lax moral

A. Ruffian

B. Licentious

C. Pirate

D. Vagabond

Answer: Option B

Solution(By Examveda Team)

One word substitute is Licentious.

Ruffian: a violent person, especially one involved in crime.
Licentious: promiscuous and unprincipled in sexual matters.
Pirate: a person who attacks and robs ships at sea.
Vagabond: a person who wanders from place to place without a home or job.