One, usually unemployed, who lives by one's wits.
One who shirks work or responsibility; a slacker.
A man who lives by his wits, without doing any regular or honest work, esp. one engaged in petty, shady dealings.
(UK, dated) In Scotland Yard usage, a low and common thief.
Origin of spiv
- Dialectal spif dandified, dandy
From American Heritage Dictionary of the English Language, 5th Edition