UNDERPROP
Etymology
Verb
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.
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.
Source: Wiktionary
Un`der*prop", v. t.
Definition: To prop from beneath; to put a prop under; to support; to
uphold.
Underprop the head that bears the crown. Fenton.
Source: Webster’s Unabridged Dictionary 1913 Edition