What are the opposite words for smart aleck?

Smart aleck is a derogatory term that refers to someone who behaves or speaks in a way that is annoying, arrogant, or sarcastic. Antonyms for the word smart aleck would be courteous, modest, humble, polite, respectful, and considerate. Courteous refers to someone who shows good manners and politeness; modest describes someone who doesn't brag or show off; humble is a quality of someone who is not assertive or arrogant; polite is a person who is well mannered and shows respect to others; respectful is a quality of someone who shows reverence and deference to others; and considerate refers to someone who thinks about others' feelings and needs.