c. 1200, lawelese "uncontrolled by law of any kind," from law (n.) + -less. Meaning "illegal" is from c. 1300. Related: Lawlessly; lawlessness.
lawless bands roaming the plains
law
law-abiding
law-breaker
lawful
law-giver
lawless
lawmaker
lawman
lawn
lawn-mower
lawn-sprinkler