'unchangeably-created' originates from the combination of 'unchangeably' and 'created'. 'Unchangeably' comes from 'unchangeable', which is derived from the prefix 'un-' meaning 'not', and 'changeable', which comes from 'change', originating from Latin 'cambiare'. 'Created' comes from Latin 'creare', meaning 'to make, bring forth'.

'Unchangeably' evolved from Middle English 'unchangeable', and 'created' from Middle English 'createn', both eventually forming the modern English term 'unchangeably-created'.

Initially, 'unchangeably' meant 'not capable of being changed', and 'created' meant 'brought into existence'. Together, they convey the idea of something made in a way that cannot be altered.