'insecurely-delivered' originates from the combination of 'insecurely' and 'delivered', where 'insecurely' is derived from 'insecure', meaning 'not secure', and 'delivered' from 'deliver', meaning 'to bring or transport to the intended recipient'.

'insecurely-delivered' combines the adverb 'insecurely' with the past participle 'delivered', forming a compound adjective.

Initially, 'insecurely' meant 'without security', and 'delivered' meant 'brought to a destination'. Together, they describe a delivery lacking security.