diff --git a/core/core-lib.el b/core/core-lib.el
index 95e8f618c..a35393d1f 100644
--- a/core/core-lib.el
+++ b/core/core-lib.el
@@ -424,5 +424,23 @@ DOCSTRING and BODY are as in `defun'.
          (dolist (target (cdr targets))
            (advice-add target (car targets) #',symbol))))))
 
+(defmacro undefadvice! (symbol _arglist &optional docstring &rest body)
+  "Undefine an advice called SYMBOL.
+
+This has the same signature as `defadvice!' an exists as an easy undefiner when
+testing advice (when combined with `rotate-text').
+
+\(fn SYMBOL ARGLIST &optional DOCSTRING &rest [WHERE PLACES...] BODY\)"
+  (declare (doc-string 3) (indent defun))
+  (let (where-alist)
+    (unless (stringp docstring)
+      (push docstring body))
+    (while (keywordp (car body))
+      (push `(cons ,(pop body) (doom-enlist ,(pop body)))
+            where-alist))
+    `(dolist (targets (list ,@(nreverse where-alist)))
+       (dolist (target (cdr targets))
+         (advice-remove target #',symbol)))))
+
 (provide 'core-lib)
 ;;; core-lib.el ends here
diff --git a/modules/lang/emacs-lisp/config.el b/modules/lang/emacs-lisp/config.el
index a4224cf09..2623a04ab 100644
--- a/modules/lang/emacs-lisp/config.el
+++ b/modules/lang/emacs-lisp/config.el
@@ -31,6 +31,7 @@ This marks a foldable marker for `outline-minor-mode' in elisp buffers.")
                ("let" "let*")
                ("when" "unless")
                ("advice-add" "advice-remove")
+               ("defadvice!" "undefadvice!")
                ("add-hook" "remove-hook")
                ("add-hook!" "remove-hook!")
                ("it" "xit")