'faultily-kept' originates from the English word 'faulty,' which comes from the Old French word 'faute,' meaning 'lack' or 'defect,' combined with 'kept,' the past participle of 'keep,' from Old English 'cēpan,' meaning 'to seize or hold.'

'faulty' evolved from the Old French 'faute' and combined with 'kept' from Old English 'cēpan' to form the modern English term 'faultily-kept.'

Initially, 'faulty' meant 'lacking' or 'defective,' and 'kept' meant 'held or maintained.' Together, they describe something maintained in a defective manner.