cuestionar
/kwestjoˈnaɾ/ · B1 · verb
to question (have doubts about)
❓ Sounds like question-ar: cuestión (question) + -ar = to question
From cuestión, Latin quaestio (an inquiry), the same root as English question and quest. Adding the verb ending -ar turns the noun into an action: to call something into question or doubt it.