diff --git a/harper-core/dictionary.dict b/harper-core/dictionary.dict
index c0b19fce..2b1dec9d 100644
--- a/harper-core/dictionary.dict
+++ b/harper-core/dictionary.dict
@@ -35183,7 +35183,7 @@ naughtily/Ry
 naughtiness/Nmg
 naughty/~J^>Vp
 nausea/~Nmg
-nauseam
+nauseam             # only used in the Latin phrase `ad nauseam`
 nauseate/VbGdS
 nauseating/JYV6
 nauseous/JYp
diff --git a/harper-core/src/linting/phrase_corrections/mod.rs b/harper-core/src/linting/phrase_corrections/mod.rs
index 7815879e..67faf26b 100644
--- a/harper-core/src/linting/phrase_corrections/mod.rs
+++ b/harper-core/src/linting/phrase_corrections/mod.rs
@@ -44,6 +44,13 @@ pub fn lint_group() -> LintGroup {
             "Corrects `a couple of more` to `a couple more`.",
             LintKind::Redundancy
         ),
+        "AdNauseam" => (
+            ["as nauseam"],
+            ["ad nauseam"],
+            "This phrase comes from Latin, where `ad` means `to`.",
+            "Corrects `as nauseam` to `ad nauseam`.",
+            LintKind::Spelling
+        ),
         "AfterAWhile" => (
             ["after while"],
             ["after a while"],
diff --git a/harper-core/src/linting/phrase_corrections/tests.rs b/harper-core/src/linting/phrase_corrections/tests.rs
index 2970c98c..39fb3c09 100644
--- a/harper-core/src/linting/phrase_corrections/tests.rs
+++ b/harper-core/src/linting/phrase_corrections/tests.rs
@@ -15,6 +15,24 @@ fn corrects_a_couple_of_more() {
     )
 }
 
+// AdNauseam
+#[test]
+fn corrects_as_nauseam_1() {
+    assert_suggestion_result(
+        "As you say, discussed as nauseam, but no nearer a solution.",
+        lint_group(),
+        "As you say, discussed ad nauseam, but no nearer a solution.",
+    );
+}
+#[test]
+fn corrects_as_nauseam_2() {
+    assert_suggestion_result(
+        "no more autism please, hearing about it as nauseam is starting to make me sick",
+        lint_group(),
+        "no more autism please, hearing about it ad nauseam is starting to make me sick",
+    );
+}
+
 // AfterAWhile
 #[test]
 fn correct_after_while() {