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The Collaborative International Dictionary
Underget

Underget \Un`der*get"\, v. t. To get under or beneath; also, to understand. [Obs.]
--R. of Gloucester.

Wiktionary
underget

vb. 1 (context transitive obsolete English) To understand; perceive. 2 (context transitive English) To receive; undertake; get at; find out. 3 (context transitive English) To get less than expected or due.