Dim-witted means slow to understand things. A dim-witted answer.
It is an insult, and a mild one only because it sounds old-fashioned. Calling somebody dim-witted describes one moment far more often than any real capacity.
1adjectivedim-wittedSlow to understand things.
“He played the dim-witted servant in every production for years.”
dim-witted is a quality.
Practised in A Song of Ice and Fire