What is another word for side issue?
Pronunciation: [sˈa͡ɪd ˈɪʃuː] (IPA) 
Side issue is a term used to define a matter that is relatively unimportant in comparison to the main topic. Some of the synonyms for side issue include peripheral, tangential, secondary, trivial, inconsequential, ancillary and extraneous. Peripheral refers to a matter that is not essential to the main topic. Similarly, tangential indicates a matter that is only slightly related to the main point. On the other hand, secondary, trivial and inconsequential suggest a less important matter that is not crucial to the central issue. Ancillary and extraneous refer to a matter that is not essential but still plays a supporting role or arises incidentally. Depending on the context, these synonyms can be interchangeably used for side issue.
