Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Slow-witted \Slow"-wit`ted\, a. Dull of apprehension; not possessing quick intelligence.
Wiktionary
a. Lacking a keen or swift intellect, not too bright or not too swift.
WordNet
adj. mentally deficient [syn: feebleminded, half-witted]
Usage examples of "slow-witted".
Old Horsemeat, who although he understood quite a bit of the secret doctrine and talked intelligently to Gummitch when they were alone, nevertheless suffered from the limitations of his statusa rather nice old god but a maddeningly slow-witted one.
His business was not with these stiff-jointed, slow-witted graziers, but with the supple, dangerous, far-seeing men who sit scheming by the gas-light in the great cities, after all the lamps and candles are out from the Merrimac to the Housatonic.
However, as Crasher had gambled, he was also too slow-witted to be sure of his chances in a fight.
Being forced to say something, and being by nature slow-witted and sluggish of invention, Sir Rowland was compelled, to his unspeakable chagrin, to fall back upon the truth.
On the escaladder he told someone, “It's cruel to tie ticklers to slow-witted snaily humans when ticklers can think and live .
It was indeed a long day, full and busy - the fore-hold to clear, the prisoners to stow away and guard (many of them privateer's men, a dangerous crew), three slow-witted heavy merchantmen to scurry after (all neutrals and all unwilling to heave-to.
It had hoped to intimidate and trick the slow-witted wielder into surrendering the relic, but the sight of a robed human, probably even a mage, threw a snag into its plans.
Tam had already made the further leap of deducing that the sloth-like fuzzball's occasional deeply obvious comments were a caustic means of taking the piss out of anyone who thought he was slow-witted, a misconception he had probably endured for years.