professionalising BrE
professionalizing AmE

This marked the beginning of the corporatising and professionalising of the sport in Singapore.

This, coupled with the professionalising of the party machine's approach to the media, helped Labour win a historic landslide in the 1997 General Election, after 18 years of Conservative government.

Significant progress has been made in professionalizing the armed forces and the police.

There are four hundred public schools between municipal and private ones from elementary to high school, many with professionalizing courses.

After 200 years, obligatory military service for young men ended yesterday, a change intended as a major step toward professionalizing the armed forces.