At least 33,082 people, most of them civilians, were killed in Syria since the uprising against President Bashar Assad's regime began in March 2011, AFP, citing the Syrian Observatory for Human Rights, reported Saturday.
The British-based rights group claimed that some 23,630 civilians have been killed, along with 8,211 soldiers and 1,241 defectors; approximately 1,000 people reportedly were killed in the past five days alone.
"This is all-out war - there is no other way to describe the violence in Syria," Observatory director Rami Abdel Rahman was quoted by AFP as declaring.
"If the conflict ends and a full assessment is carried out on the ground, the toll may well turn out to be higher," Abdel Rahman said.
The watchdog group's estimates exclude the many unidentified victims of the conflict, as well as the thousands of people missing, Abdel Rahman said.
The Observatory relies on a network of activists, lawyers and medics on the ground inside Syria for its information.