mouse quoted Cain's Jawbone by Edward Powys Mathers
My slight experience of detetive-sergeants is that they have a mannerl but no plural. If you use a word of more than two syllables to them they think you are laughing at them. They are, to that extent, acute.
— Cain's Jawbone by Edward Powys Mathers (Page 59)
1930s cryptic puzzle book says acab