IPA: /ˈmɪdrɪf/
KK: /ˈmɪdrɪf/
The area of the body between the chest and the waist.
She wore a top that showed her midriff.
Midriff → It is formed from "mid-" (meaning middle) and "riff" (from Old English "hrif", meaning the body or the trunk). The word "midriff" refers to the middle part of the body, specifically the area between the chest and the abdomen.
Think of the 'middle' ('mid-') part of the 'body' ('riff') — that's why midriff refers to the middle section of the torso.
No commonly confused words.