Wordnet 3.0
ADJECTIVE (1)
1.
without scruples or principles;
- Example: "unscrupulous politicos who would be happy to sell...their country in order to gain power"
The Collaborative International Dictionary of English v.0.48:
Unscrupulous \Un*scru"pu*lous\, a.
Not scrupulous; unprincipled. -- Un*scru"pu*lous*ly, adv.
-- Un*scru"pu*lous*ness, n.
[1913 Webster]
WordNet (r) 3.0 (2006):
unscrupulous
adj 1: without scruples or principles; "unscrupulous politicos
who would be happy to sell...their country in order to
gain power" [ant: scrupulous]