'auxiliator' originates from Latin, specifically the word 'auxiliator', where 'auxilium' meant 'help' and the agent-forming suffix '-ator' meant 'one who'.

'auxiliator' changed from Medieval Latin 'auxiliator' and was borrowed into English from Late/Medieval Latin usage, eventually becoming the modern English word 'auxiliator'.

Initially, it meant 'one who helps or provides aid', and over time it has largely retained this meaning, though the term has become relatively rare and somewhat formal in modern usage.