A lot vs. Alot: 9 Grammatical Pitfalls
"disreputable, vulgar," 1794, from low (adj.) + life; as a noun, "coarse, no-good person" it is recorded from 1911. Also lowlife.
: fancies himself in love with the raucous, lowlife Doreen (1794+)
A person of reprehensible habits; bum (1909+)