screwball β Slang. an eccentric or whimsically eccentric person; a nut.
barmy β If you say that someone or something is barmy, you mean that they are slightly crazy or very foolish.
batty β If you say that someone is batty, you mean that they are rather eccentric or slightly crazy.
bonkers β If you say that someone is bonkers, you mean that they are silly or act in a crazy way.
cracked β An object that is cracked has lines on its surface because it is damaged.
crazed β Crazed people are wild and uncontrolled, and perhaps insane.
daft β If you describe a person or their behaviour as daft, you think that they are stupid, impractical, or rather strange.
delirious β Someone who is delirious is unable to think or speak in a sensible and reasonable way, usually because they are very ill and have a fever.
demented β Someone who is demented has a severe mental illness, especially Alzheimer's disease.
deranged β Someone who is deranged behaves in a wild and uncontrolled way, often as a result of mental illness.
dingy β of a dark, dull, or dirty color or aspect; lacking brightness or freshness.
dippy β somewhat mad or foolish: dippy with love.
flipped β to toss or put in motion with a sudden impulse, as with a snap of a finger and thumb, especially so as to cause to turn over in the air: to flip a coin.
fruity β resembling fruit; having the taste or smell of fruit.
idiotic β of, relating to, or characteristic of an idiot.
mad as a hatter β mentally disturbed; deranged; insane; demented.
moonstruck β mentally deranged, supposedly by the influence of the moon; crazed.
out of one's mind β (in a human or other conscious being) the element, part, substance, or process that reasons, thinks, feels, wills, perceives, judges, etc.: the processes of the human mind.
out to lunch β a light midday meal between breakfast and dinner; luncheon.
round the bend β to force (an object, especially a long or thin one) from a straight form into a curved or angular one, or from a curved or angular form into some different form: to bend an iron rod into a hoop.
