diff --git a/lib/ChunkGraph.js b/lib/ChunkGraph.js
index 8e9bd9fc8..a9ada154a 100644
--- a/lib/ChunkGraph.js
+++ b/lib/ChunkGraph.js
@@ -558,7 +558,7 @@ class ChunkGraph {
 
 	/**
 	 * @param {Chunk} chunk the chunk
-	 * @returns {Module[]} root modules of the chunks (ordered by identifer)
+	 * @returns {Module[]} root modules of the chunks (ordered by identifier)
 	 */
 	getChunkRootModules(chunk) {
 		const cgc = this._getChunkGraphChunk(chunk);
diff --git a/lib/Template.js b/lib/Template.js
index 939f18af2..e8acb244b 100644
--- a/lib/Template.js
+++ b/lib/Template.js
@@ -129,7 +129,7 @@ class Template {
 	 * @param {number} n number to convert to ident
 	 * @returns {string} returns single character ident
 	 */
-	static numberToIdentifer(n) {
+	static numberToIdentifier(n) {
 		// lower case
 		if (n < DELTA_A_TO_Z) {
 			return String.fromCharCode(START_LOWERCASE_ALPHABET_CODE + n);
@@ -144,8 +144,8 @@ class Template {
 
 		// use multiple letters
 		return (
-			Template.numberToIdentifer(n % (2 * DELTA_A_TO_Z)) +
-			Template.numberToIdentifer(Math.floor(n / (2 * DELTA_A_TO_Z)))
+			Template.numberToIdentifier(n % (2 * DELTA_A_TO_Z)) +
+			Template.numberToIdentifier(Math.floor(n / (2 * DELTA_A_TO_Z)))
 		);
 	}
 
diff --git a/lib/dependencies/HarmonyDetectionParserPlugin.js b/lib/dependencies/HarmonyDetectionParserPlugin.js
index b6a6034ea..9ab9a9115 100644
--- a/lib/dependencies/HarmonyDetectionParserPlugin.js
+++ b/lib/dependencies/HarmonyDetectionParserPlugin.js
@@ -62,21 +62,21 @@ module.exports = class HarmonyDetectionParserPlugin {
 		};
 
 		const nonHarmonyIdentifiers = ["define", "exports"];
-		for (const identifer of nonHarmonyIdentifiers) {
+		for (const identifier of nonHarmonyIdentifiers) {
 			parser.hooks.evaluateTypeof
-				.for(identifer)
+				.for(identifier)
 				.tap("HarmonyDetectionParserPlugin", nullInHarmony);
 			parser.hooks.typeof
-				.for(identifer)
+				.for(identifier)
 				.tap("HarmonyDetectionParserPlugin", skipInHarmony);
 			parser.hooks.evaluate
-				.for(identifer)
+				.for(identifier)
 				.tap("HarmonyDetectionParserPlugin", nullInHarmony);
 			parser.hooks.expression
-				.for(identifer)
+				.for(identifier)
 				.tap("HarmonyDetectionParserPlugin", skipInHarmony);
 			parser.hooks.call
-				.for(identifer)
+				.for(identifier)
 				.tap("HarmonyDetectionParserPlugin", skipInHarmony);
 		}
 	}
diff --git a/lib/optimize/MangleExportsPlugin.js b/lib/optimize/MangleExportsPlugin.js
index 2b4b268ce..b731f3979 100644
--- a/lib/optimize/MangleExportsPlugin.js
+++ b/lib/optimize/MangleExportsPlugin.js
@@ -5,7 +5,7 @@
 
 "use strict";
 
-const { numberToIdentifer } = require("../Template");
+const { numberToIdentifier } = require("../Template");
 const { assignDeterministicIds } = require("../ids/IdHelpers");
 const {
 	concatComparators,
@@ -65,7 +65,7 @@ class MangleExportsPlugin {
 							e => e.name,
 							comparator,
 							(e, id) => {
-								const name = numberToIdentifer(id);
+								const name = numberToIdentifier(id);
 								const size = usedNames.size;
 								usedNames.add(name);
 								if (size === usedNames.size) return false;
diff --git a/lib/wasm/WebAssemblyUtils.js b/lib/wasm/WebAssemblyUtils.js
index e1ea2dd21..712bc692f 100644
--- a/lib/wasm/WebAssemblyUtils.js
+++ b/lib/wasm/WebAssemblyUtils.js
@@ -46,7 +46,7 @@ const getUsedDependencies = (moduleGraph, module, mangle) => {
 			if (mangle) {
 				array.push({
 					dependency: dep,
-					name: Template.numberToIdentifer(importIndex++),
+					name: Template.numberToIdentifier(importIndex++),
 					module: MANGLED_MODULE
 				});
 			} else {
diff --git a/open-bot.yaml b/open-bot.yaml
index 838e87ebd..51819ca1e 100644
--- a/open-bot.yaml
+++ b/open-bot.yaml
@@ -541,7 +541,7 @@ rules:
       last_action_age: 13w # three months
     actions:
       comment:
-        identifer: inactive-warning
+        identifier: inactive-warning
         message: |-
           **This issue had no activity for at least three months.**
 
@@ -565,7 +565,7 @@ rules:
     actions:
       close: true
       comment:
-        identifer: inactive-close
+        identifier: inactive-close
         message: |-
           Issue was closed because of inactivity.
 
diff --git a/schemas/plugins/SourceMapDevToolPlugin.json b/schemas/plugins/SourceMapDevToolPlugin.json
index 60cd87a69..d948d142d 100644
--- a/schemas/plugins/SourceMapDevToolPlugin.json
+++ b/schemas/plugins/SourceMapDevToolPlugin.json
@@ -64,7 +64,7 @@
       "description": "Generator string or function to create identifiers of modules for the 'sources' array in the SourceMap used only if 'moduleFilenameTemplate' would result in a conflict",
       "oneOf": [
         {
-          "description": "Custom function generating the identifer",
+          "description": "Custom function generating the identifier",
           "instanceof": "Function",
           "tsType": "Function"
         },
@@ -108,7 +108,7 @@
       "description": "Generator string or function to create identifiers of modules for the 'sources' array in the SourceMap",
       "oneOf": [
         {
-          "description": "Custom function generating the identifer",
+          "description": "Custom function generating the identifier",
           "instanceof": "Function",
           "tsType": "Function"
         },
diff --git a/test/Template.unittest.js b/test/Template.unittest.js
index 8b744e9c5..e951fbf95 100644
--- a/test/Template.unittest.js
+++ b/test/Template.unittest.js
@@ -10,7 +10,7 @@ describe("Template", () => {
 		const items = [];
 		let item;
 		for (let i = 0; i < 80; i += 1) {
-			item = Template.numberToIdentifer(i);
+			item = Template.numberToIdentifier(i);
 			expect(item).not.toBe("");
 			expect(items).not.toContain(item);
 			items.push(item);
diff --git a/test/numberHash.unittest.js b/test/numberHash.unittest.js
index 683d1a161..ea059297d 100644
--- a/test/numberHash.unittest.js
+++ b/test/numberHash.unittest.js
@@ -1,12 +1,12 @@
 const numberHash = require("../lib/util/numberHash");
-const { numberToIdentifer } = require("../lib/Template");
+const { numberToIdentifier } = require("../lib/Template");
 
 describe("numberHash", () => {
 	for (const n of [10, 100, 1000, 10000]) {
 		it("should eventually fill nearly the complete range up to n", () => {
 			const set = new Set();
 			for (let i = 0; i < n * 200; i++) {
-				set.add(numberHash(numberToIdentifer(i), n));
+				set.add(numberHash(numberToIdentifier(i), n));
 				if (set.size >= n - 1) break;
 			}
 			expect(set.size).toBeGreaterThanOrEqual(n - 1);