The word 'insecurely-maintained' is a compound formed from 'insecurely' (from 'insecure' + '-ly') and 'maintained' (past participle of 'maintain'). 'Insecure' comes from Latin 'insecurus' meaning 'unsafe', and 'maintain' comes from Old French 'maintenir', from Latin 'manu tenere' meaning 'to hold in the hand'.

'Insecure' evolved from Latin 'insecurus' to Old French 'insecur', then to Middle English 'insecure'. 'Maintain' evolved from Latin 'manu tenere' to Old French 'maintenir', then to Middle English 'maintenen', and finally to modern English 'maintain'. The compound 'insecurely-maintained' is a modern English formation.

Initially, 'insecure' meant 'unsafe' and 'maintain' meant 'to keep in a certain state'. The compound now specifically refers to something kept in a state that is not secure or safe.