'well-stocked' originates from the combination of 'well,' meaning 'in a good or satisfactory way,' and 'stocked,' from the Old English 'stocc,' meaning 'tree trunk' or 'log,' which evolved to mean 'supply' or 'store.'

'stocked' changed from the Old English word 'stocc' to the modern English word 'stock,' and eventually became part of the compound adjective 'well-stocked.'

Initially, 'stocked' meant 'to furnish with a supply,' and over time, 'well-stocked' evolved to mean 'having a plentiful supply.'