Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun underbelly

3 senses of underbelly

Sense 1
underbelly -- (lower side; "the underbellies of clouds")
       => bottom, underside, undersurface -- (the lower side of anything)

Sense 2
underbelly, underbody -- (the soft belly or underside of an animal's body)
       => abdomen, venter, stomach, belly -- (the region of the body of a vertebrate between the thorax and the pelvis)

Sense 3
underbelly -- (the quality of being weak or unprotected; "the soft underbelly of the Axis"- Winston Churchill)
       => weak part, weak spot, soft spot -- (a place of especial vulnerability)