diff --git a/formatting.cabal b/formatting.cabal
--- a/formatting.cabal
+++ b/formatting.cabal
@@ -1,5 +1,5 @@
 name:                formatting
-version:             5.3
+version:             5.4
 synopsis:            Combinator-based type-safe formatting (like printf() or FORMAT)
 description:         Combinator-based type-safe formatting (like printf() or FORMAT), modelled from the HoleyMonoids package.
 license:             BSD3
diff --git a/src/Formatting/Formatters.hs b/src/Formatting/Formatters.hs
--- a/src/Formatting/Formatters.hs
+++ b/src/Formatting/Formatters.hs
@@ -35,6 +35,7 @@
   groupInt,
   commas,
   ords,
+  plural,
   asInt,
   -- * Padding
   left,
@@ -219,7 +220,11 @@
               _ -> "th"
           where tens = n `mod` 100
 
--- Bases
+-- | English plural suffix for an integral.
+plural :: (Num a, Eq a) => Text -> Text -> Format a
+plural s p = later (\i -> if i == 1 then B.build s else B.build p)
+
+-- | Render an integral at base n.
 base :: Integral a => Int -> Format a
 base numBase = later (B.build . atBase numBase)