The term 'slowly-updated' is a compound adjective formed by combining 'slowly,' an adverb meaning 'at a slow pace,' and 'updated,' the past participle of 'update,' meaning 'to bring something up to date.'

The word 'update' comes from the combination of 'up,' meaning 'to a higher position,' and 'date,' meaning 'a particular day.'

Initially, 'update' meant 'to bring something to a current state,' and 'slowly' has always meant 'at a slow pace.' The combination emphasizes the infrequency of updates.