"Become addle" is an expression used to describe someone who has become confused or disoriented. Some synonyms for this phrase include "muddle," "confound," "bewilder," "disorient," and "fluster." These words imply a sense of disarray or disorganization in the mind, as the person struggles to process information or make sense of their surroundings. Other synonyms include "befuddle," "discombobulate," "jumble," and "mix up," all of which suggest a state of mental distress or confusion. Regardless of the specific word used, each conveys a similar meaning and highlights the challenges of navigating through a foggy mental landscape.