'often-noticed' is a compound word formed from 'often' and 'noticed'. 'Often' originates from Old English 'oft', meaning 'frequently', and 'noticed' comes from the Latin 'notitia', meaning 'a being known'.

'often' evolved from Old English 'oft' and 'noticed' from Latin 'notitia', eventually forming the modern English compound 'often-noticed'.

Initially, 'often' meant 'frequently' and 'noticed' meant 'a being known'. The compound 'often-noticed' retains the meaning of being frequently observed.