There are a number of synonyms for the term "fathers-in-law" that can be used to refer to the male parents of one's spouse. Some of the most commonly used synonyms include "dads-in-law," "papas-in-law," "fathers of one's spouse," "spousal fathers," "paternal in-laws," and "father figures-in-law." Each of these terms can be used interchangeably, but some may be more appropriate depending on the context in which they are being used. For example, "father figures-in-law" may be more appropriate when referring to a male parent who has taken on a more mentor-like role in one's life, while "paternal in-laws" may be more appropriate when referring to a more traditional or formal relationship with one's spouse's father.