Sentence:  One senses from the paintings that followed his first explosion of production that he hoped to <WSD>unget</WSD> the hang of something he'd just gotten the hang of, to whittle down even further his self-professed paucity of conceptual and manual means.Webster 1913 
Meaning of the word marked with <WSD> tags:  To unacquire; relinquish; release; get rid of; lose; lose hold of; forget