Before the meeting ended, which was not long after, I was set thinking of Despard-Smith’s use of the phrase ‘the men’. That habit went back to the ’90’s: most of us at this table would say ‘the young men’ or ‘the undergraduates’. But at this time, the late 1930’s, the undergraduates themselves would usually say ‘the boys’. It was interesting to hear so many strata of speech round one table. Old Gay, for example, used ‘absolutely’, not only in places where the younger of us might quite naturally still, but also in the sense of ‘actually’ or even ‘naturally’ – exactly as though he were speaking in the 1870’s. Pilbrow, always up to the times, used an idiom entirely modern, but Despard-Smith still brought out slang that was fresh at the end of the century – ‘crab’, and ‘josser’,1 and ‘by Jove’. Crawford said ‘man of science’, keeping to the Edwardian usage which we had abandoned. So, with more patience it would have been possible to construct a whole geological record of idioms, simply by listening word by word to a series of college meetings.
– C. P. Snow (The Masters, 171)
* Defined by the OED thus:
A simpleton; a soft or silly fellow. So, in flippant or contemptuous use, a fellow, an (old) chap.
Date range from 1886 to 1946, but clustering around 1900 (corroborating Snow).