Adjectitious is an adjective that means "not inherent, but added extrinsically". Some synonyms for this word include "extraneous", "accidental", "incidental", "superfluous", "sporadic", "auxiliary", "incidental", "peripheral", and "nonessential". Each of these words describes something that is not essential, but rather an addition or something that is not the main focus. For example, an extraneous detail in a story may not be necessary to the plot but is included for additional context. An incidental cost may be unexpected and not directly related to the main expense. Overall, adjectitious and its synonyms describe things that are not vital or critical, but still have a role or place in a larger context.