Naomi Watts plays Diana as a sweet-natured, wistful, half-wit.
For the instant he partially suspected mischief and wheeled about, but one look at the half-wit dissipated all doubt.
"No half-wit about you," admiringly quoth the carpenter's mate.
You see, he confessed—the half-wit did—before he was killed.
For what the half-wit did was what he had seen these others do.
Allie Mulberry the half-wit was one of the highlights of life in the town.
"Hello, Pa," exclaimed the half-wit, and laughed long and loud.
There he began to think less about the half-wit, with his livid face and mouth like a fish.
"Now you—now you throw it at me—and I'll hit it," said the half-wit.
And, as Fibsy had declared, he knew the half-wit now well enough to feel pretty sure when he was telling the truth and when not.
1670s, originally "a would-be wit whose abilities are mediocre;" sense of "simpleton" (one lacking all his wits) is first attested 1755.
Half-wits are fleas; so little and so light,Phrase out of half wit "half out of one's mind" was in Middle English (late 14c.). Half-witted "lacking common sense" is from 1640s.
We scarce could know they live, but that they bite.
[Dryden, "All for Love"]
A foolish person: half-wits in the phys ed class (1755+)