'perilously-disconnected' originates from the combination of 'perilous' and 'disconnected', where 'perilous' comes from Old French 'perilleux', meaning 'dangerous', and 'disconnected' from Latin 'dis-' meaning 'apart' and 'connectere' meaning 'to join together'.

'perilleux' transformed into the English word 'perilous', and 'dis-' combined with 'connectere' evolved into 'disconnected', eventually forming the modern English term 'perilously-disconnected'.

Initially, 'perilous' meant 'full of danger', and 'disconnected' meant 'not joined', but together they evolved to describe a state of being dangerously separated.