I've checked the word spending in many dictionaries and they all say it's uncountable. For example:
However, I've seen many examples of spendings in corpora such as COCA. For example:
I think if you cut some government spendings and government itself, I
think this will trickle on down to people that really need help.
How can it be explained?
Best Answer
You can pluralize an uncountable noun if there's an implied countable noun.
You can use the word "sands" as short for "types of sand". For example, "I've seen black sand and red sand. Of these two exotic sands, ..."
If two people at a table order water, you can refer to that as "two waters" rather than "two glasses of water" or two orders.
Here, "government spendings" is short for "instances of government spending". Instances of spending are countable.