Set Out to Weaken Someone's Authority
This page is the CodyCross answer for the clue below from Tracking Time, Group 1057, Puzzle 3 (Alexander Bain).
Question is: Set Out to Weaken Someone's Authority
and the answer is: UNDERMINE
Word Meaning:
UNDERMINE — To dig underneath (something), to make a passage for destructive or military purposes; to sap.
Definitions from Wiktionary.