More than 1,500 new words from ankle biters to the more American slang of grungy and veg out are included in the new Collins Concise Dictionary to be published next month.

Other words guaranteed to drive veteran crossword players mad are doo-wop, gabfest, Go-Go, Rambo-esque, Slim and yobbo.Six years have passed since the first Collins dictionary was published in 1982, and the more than 1,500 new words included in the second edition reflect some of the ways the world has changed.

The edition includes new scientific and technical words such as tokamak, a type of nuclear fusion reactor.

Computer terms include WORMT, the acronym for Write Once Read Many Times, referring to data storage methods, and WYSIWYG, for What You See Is What You Get.

Many of the new words are slang from around the world.

Ankle biter is an Australian term for a young child.

From the Soviet Union comes glasnost, described as "the policy of public frankness and accountability developed in Russia under the leadership of Mikhail Gorbachev."

In Britain, a yobbo is "an aggressive and surly youth." The American influence is especially strong in the new dictionary.

There is gabfest ("prolonged gossiping or conversation"), Go-Go ("a form of soul music originating in Washington, D.C., characterized by the use of funk rhythms and a brass section") and grungy ("squalid, seedy, grotty").

Doo-wop is "vocalizing based on rhythm-and-blues harmony," sashay is "to move, walk or glide along casually" and veg out is "to relax in an inert, passive way, vegetate: vegging out in front of the television set."

Then there's DINCS, a yuppie acronym for "double income no children: used of couples."

Ramboesque, now standard in British English, means "looking or

behaving like or characteristic of Rambo, a fictional film character noted for his mindless brutality and aggression."