What are the opposite words for i.d.?

The term "I.D." is typically an abbreviation for "identification," and as such, antonyms might include phrases such as "anonymity," "obscurity," or "incognito." When referring specifically to an official identification document, antonyms might include "misidentification," "forgery," or "imposture." In situations where the term is used to describe a person's individuality or uniqueness, antonyms could include terms like "conformity," "sameness," or "standardization." Regardless of the context in which the term is used, antonyms for "I.D." generally involve a lack of verification or clear identification, the presence of deception or falsehood, or a decrease in individuality or variation.