auxiliar
/auɡsiˈljaɾ/ · B2 · verb
to help, to aid
🤝 au-XIL-iar: Latin auxilium = help; same root as English auxiliary
Spanish auxiliar comes from Latin auxilium, meaning help or aid. English auxiliary shares the root, so an auxiliary verb is a helping verb. Link the -xil- chunk in auxiliar and auxilio (help!) to remember the core meaning.