She tried to rationalize her argument to make it more convincing.
Она пыталась рационализировать свой аргумент, чтобы сделать его более убедительным.
Definitions
To rationalize an argument means to provide logical reasoning or justification for a particular viewpoint or position, often by presenting evidence or explanations that make the argument seem more reasonable or acceptable, even if the underlying motivations may be based on emotions or biases.