A person who asks questions; someone who requests information or seeks an answer.
From ask (Old English ascian) + -er (Old English -ere, -ar, meaning one who performs an action). The form appeared in Middle English and remains one of the most straightforward agent nouns in English.
Philosophers sometimes distinguish between good askers and good answerers—asking the right question is often harder than finding the answer, and history's great advances often came from people brave enough to ask what everyone else took for granted!
Complete word intelligence in one call. Free tier — 50 lookups/day.