'sporadically-overlooked' is a compound word combining 'sporadically' and 'overlooked'. 'Sporadically' originates from the Greek word 'sporadikós', meaning 'scattered'. 'Overlooked' comes from Middle English 'overloken', meaning 'to fail to notice'.

The term 'sporadically-overlooked' evolved as a modern compound to describe things that are occasionally ignored.

Initially, 'sporadically' meant 'scattered' and 'overlooked' meant 'failed to notice'. Together, they describe something occasionally ignored.