Linearize is a word used to describe the act of making something linear. Synonyms for this word may include "straighten," "flatten," "simplify," or "regularize." Other synonyms may include "standardize," "streamline," "normalize," or "rectify." These synonyms are often used interchangeably depending on the context of the situation. For example, if you are discussing the process of simplifying a complex equation, you may use "simplify" as a synonym for "linearize." If you are discussing the process of standardizing a manufacturing process, you may use "normalize" as a synonym for "linearize." Regardless of the specific synonym used, they all reflect the concept of making something more linear or systematic.