From under- + prop.
underprop (third-person singular simple present underprops, present participle underpropping, simple past and past participle underpropped)
- (transitive) To prop from beneath; to put a prop under; to support; to uphold, prop up.
- 1603, John Florio, translating Michel de Montaigne, Essays, II.12:
- He hath employed all his wit to frame him selfe anew (as impatient of his fortune) and to underprop or uphold himselfe by his inventions.