diff --git a/jquery/jquery.d.ts b/jquery/jquery.d.ts
index 29b7697b2a..ff259e7fbd 100644
--- a/jquery/jquery.d.ts
+++ b/jquery/jquery.d.ts
@@ -607,6 +607,16 @@ interface JQueryAnimationOptions {
     specialEasing?: Object;
 }
 
+interface JQueryEasingFunction {
+    ( percent: number ): number;
+}
+
+interface JQueryEasingFunctions {
+    [ name: string ]: JQueryEasingFunction;
+    linear: JQueryEasingFunction;
+    swing: JQueryEasingFunction;
+}
+
 /**
  * Static members of jQuery (those on $ and jQuery themselves)
  */
@@ -889,6 +899,9 @@ interface JQueryStatic {
     /**
      * Effects
      */
+
+    easing: JQueryEasingFunctions;
+
     fx: {
         tick: () => void;
         /**
diff --git a/jqueryui/jqueryui.d.ts b/jqueryui/jqueryui.d.ts
index 9dd576e1a5..197c4dbd1d 100644
--- a/jqueryui/jqueryui.d.ts
+++ b/jqueryui/jqueryui.d.ts
@@ -1804,3 +1804,36 @@ interface JQueryStatic {
     widget: JQueryUI.Widget;
     Widget: JQueryUI.Widget;
 }
+
+interface JQueryEasingFunctions {
+    easeInQuad: JQueryEasingFunction;
+    easeOutQuad: JQueryEasingFunction;
+    easeInOutQuad: JQueryEasingFunction;
+    easeInCubic: JQueryEasingFunction;
+    easeOutCubic: JQueryEasingFunction;
+    easeInOutCubic: JQueryEasingFunction;
+    easeInQuart: JQueryEasingFunction;
+    easeOutQuart: JQueryEasingFunction;
+    easeInOutQuart: JQueryEasingFunction;
+    easeInQuint: JQueryEasingFunction;
+    easeOutQuint: JQueryEasingFunction;
+    easeInOutQuint: JQueryEasingFunction;
+    easeInExpo: JQueryEasingFunction;
+    easeOutExpo: JQueryEasingFunction;
+    easeInOutExpo: JQueryEasingFunction;
+    easeInSine: JQueryEasingFunction;
+    easeOutSine: JQueryEasingFunction;
+    easeInOutSine: JQueryEasingFunction;
+    easeInCirc: JQueryEasingFunction;
+    easeOutCirc: JQueryEasingFunction;
+    easeInOutCirc: JQueryEasingFunction;
+    easeInElastic: JQueryEasingFunction;
+    easeOutElastic: JQueryEasingFunction;
+    easeInOutElastic: JQueryEasingFunction;
+    easeInBack: JQueryEasingFunction;
+    easeOutBack: JQueryEasingFunction;
+    easeInOutBack: JQueryEasingFunction;
+    easeInBounce: JQueryEasingFunction;
+    easeOutBounce: JQueryEasingFunction;
+    easeInOutBounce: JQueryEasingFunction;
+}
\ No newline at end of file