IPA: /ˌsʌb.lɪˈtɛr.i/
KK: /sʌbˈlɪtərɪ/
Referring to works that are not considered literature, such as letters or diaries, and often lacking artistic or literary quality.
The author's subliterary pieces provide insight into their personal life but are not meant for literary acclaim.
Subliterary → It is formed from "sub-" (meaning under or below) and "literary" (from Latin "literarius", meaning relating to letters or literature). The word "subliterary" refers to works that are considered to be beneath the standard of literary quality or not fully recognized as literature.
Think of something that is 'under' ('sub-') the usual standards of 'literature' — that's what subliterary means.