The plural of pair is pairs, so why isn't the poker hand called two pairs?
There is presumably a historical reason - what is that reason?
The plural of pair is pairs, so why isn't the poker hand called two pairs?
There is presumably a historical reason - what is that reason?
The plural of pair is pairs
meh.
According to Merriam-Webster, “the usual plural is pairs, when there is no preceding number or indicator of number (as several).” It gives “conflicting pairs of truths” as an example. But unlike the more traditional sticklers above, M-W concedes, strangely, that “when a number or indicator of number precedes pair, either pair or pairs may be used,” going on to cite examples such as “six pair of pants” and “three pairs of oars.” American Heritage recognizes that while “pairs” is the more common plural form, “pair” is not incorrect. It qualifies that “pair” or “pairs” can be used after a number other than one, “but the plural is now more common: She bought six pairs (or pair) of stockings.”
from here, and there are many more opinions listed as well. http://www.glossophilia.org/?p=4812