'erratically-assessed' combines 'erratic,' originating from Latin 'erraticus,' meaning 'wandering,' and 'assessed,' from Latin 'assessus,' meaning 'to sit by or near.'

'erraticus' transformed into the Old French 'erratique,' and 'assessus' became the Old French 'assesser,' eventually forming the modern English 'erratically-assessed.'

Initially, 'erratic' meant 'wandering,' but over time it evolved to mean 'unpredictable,' while 'assessed' has largely retained its meaning of 'evaluated.'