Sentence:  The buſy candidates for power and fame / Have hopes, and fears, and wiſhes juſt the ſame; / Diſabled both to combat, or to fly, / Muſt hear all taunts, and hear without reply. / <WSD>Uncheck'd</WSD> on both, loud rabbles vent their rage, / As mongrels bay the lion in a cage. 
Meaning of the word marked with <WSD> tags:  Unrestrained, not held back.