Rating | Solver | Clue |
---|---|---|
WEAKENED | Undermined | |
DETERIORATED | Undermined | |
DESTABILISED | Undermined | |
COMPROMISED | Undermined | |
DEMORALIZED | Undermined | |
ERODED | Undermined (confidence) | |
NIAGARA PERIOD | ...reater thickness of limestone, which is gradually undermined by the removal of the shale. See Chart of Geology. ... |