Sleazy (adjective)

1. Disreputable, seedy, or morally questionable.
2. Characterized by dishonesty or a lack of integrity.

Origin:

Early 20th century: of uncertain origin, probably from dialect sleaze "soft, damp earth".

Examples:

1. He had a reputation for being a sleazy businessman.
2. The sleazy hotel was known for its dirty rooms and bed bugs.
3. He was accused of having a sleazy relationship with his secretary.
4. The area was known for its sleazy bars and strip clubs.
5. He was caught in a sleazy scheme to defraud investors.