Sentence:  By the early Seventies, Playboy was selling seven million copies a month and Hefner's globe-trotting lifestyle was <WSD>abetted</WSD> by his private jet, the Big Bunny, that contained a circular bed, an inside disco and a wet bar. 
Meaning of the word marked with <WSD> tags:  To incite; to assist or encourage by aid or countenance in crime. (from c. 1350-1470)<ref name=SOED>(page=4)</ref>