There are several synonyms for the phrase "betray itself", all of which convey the same general meaning. When something betrays itself, it usually refers to a situation where the truth or reality of a situation becomes apparent, often despite attempts to keep it hidden or obscure. Some synonyms for this phrase include "reveal itself", "give itself away", "become evident", "show its true nature", and "expose itself". These phrases are often used to describe situations where a person or object is or has been attempting to hide something, but the truth is ultimately revealed either through conscious or unconscious actions or circumstances outside of their control. Regardless of the specific phrase used, the overarching idea remains the same - that truth will inevitably find its way to the surface.