outlaw (n.) Look up outlaw at Dictionary.com
Old English utlaga "one put outside the law" (and thereby deprived of its benefits and protections), from a Scandinavian source such as Old Norse utlagi (n.) "outlaw," from utlagr (adj.) "outlawed, banished," from ut "out" (see out (adv.)) + *lagu, plural of lag "law" (see law).
[G]if he man to deaðe gefylle, beo he þonne utlah ["Laws of Edward & Guthrum," c.924]
Meaning "one living a lawless life" is first recorded 1880. As an adjective from Old English.
outlaw (v.) Look up outlaw at Dictionary.com
Old English utlagian "to outlaw, banish," from utlaga "an outlaw" (see outlaw (n.)). Related: Outlawed; outlawing.