62: -Or and -Rix Feb 8, 2015

Many positions in which the form for men ends with '-or', such as aviator, end in '-rix'. This comes from the Latin feminine case endings. However, there are some words such as 'actress' and 'waitress' that do not follow that rule. The reason is because the 'rix' sound is more difficult to pronounce than 'ress', and over time, common words changed due to this ease. Less common words do not change, such as 'aviatrix', and 'executrix'.