I. | ̷ ̷ ̷ ̷| ̷ ̷ transitive verb
Etymology: under (I) + prop
1. : to prop up from below : underpin
2. : uphold , support
underprop a reputation
3. : to serve as a prop or support underneath
II. ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ noun
: a prop placed underneath or supporting something