diff --git a/README.md b/README.md
index de10026..f83aaf9 100644
--- a/README.md
+++ b/README.md
@@ -47,6 +47,31 @@ Via CLI
 textlint --rule @textlint-rule/no-duplicate-abbr README.md
 ```
 
+## Options
+
+```ts
+export type Options = {
+    /**
+     * A list for ignoring Acronyms or Abbreviations.
+     * e.g. you can allow "NPO organization" by following setting.
+     * "allowAbbrList": ["NPO"]
+     */
+    allowAbbrList: string[];
+}
+```
+
+Example setting:
+
+```json5
+{
+  "rules": {
+    "@textlint-rule/no-duplicate-abbr": {
+      "allowAbbrList": ["NPO"] // Allow to use "NPO organization"
+    }
+  }
+}
+```
+
 ## Changelog
 
 See [Releases page](https://github.com/textlint-rule/textlint-rule-no-duplicate-abbr/releases).
diff --git a/src/textlint-rule-no-duplicate-abbr.ts b/src/textlint-rule-no-duplicate-abbr.ts
index 65c829b..95de145 100644
--- a/src/textlint-rule-no-duplicate-abbr.ts
+++ b/src/textlint-rule-no-duplicate-abbr.ts
@@ -1,16 +1,29 @@
 import { TextlintRuleReporter } from "@textlint/types";
 import dataset from "./dataset.json";
 
-const reporter: TextlintRuleReporter = (context) => {
+export type Options = {
+    /**
+     * A list for ignoring Acronyms or Abbreviations.
+     * e.g. you can allow "NPO organization" by following setting.
+     * "allowAbbrList": ["NPO"]
+     */
+    allowAbbrList: string[];
+};
+const reporter: TextlintRuleReporter<Options> = (context, options) => {
     const { Syntax, getSource, report, RuleError } = context;
     const abbrDataSet = new Map<string, { suffixes: string[]; definition: string }>(
         dataset as [string, { suffixes: string[]; definition: string }][]
     );
+    const allowAbbrList = options?.allowAbbrList ?? [];
     return {
         [Syntax.Str](node) {
             const source = getSource(node);
             const words = source.split(/\b/);
             words.forEach((word, index) => {
+                // Skip the word
+                if (allowAbbrList.includes(word)) {
+                    return;
+                }
                 const hasSpace = /\s/.test(words[index + 1]);
                 const nextWord = hasSpace ? words[index + 2] : words[index + 1];
                 if (!nextWord) {
@@ -31,7 +44,7 @@ const reporter: TextlintRuleReporter = (context) => {
                     report(
                         node,
                         new RuleError(
-                            `"${word}${spacer}${nextWord}" uses duplicated suffix word. "${word}" stands for "${matchData.definition}".`,
+                            `"${word}${spacer}${nextWord}" has duplicated suffix word. "${word}" stands for "${matchData.definition}".`,
                             {
                                 index: startIndexOfWord
                             }
diff --git a/test/textlint-rule-no-duplicate-abbr.test.ts b/test/textlint-rule-no-duplicate-abbr.test.ts
index 20420e2..1b94a68 100644
--- a/test/textlint-rule-no-duplicate-abbr.test.ts
+++ b/test/textlint-rule-no-duplicate-abbr.test.ts
@@ -1,14 +1,24 @@
 import TextLintTester from "textlint-tester";
 import rule from "../src/textlint-rule-no-duplicate-abbr";
+
 const tester = new TextLintTester();
 tester.run("textlint-rule-no-duplicate-abbr", rule, {
-    valid: ["BGP is Border Gateway Protocol."],
+    valid: ["BGP is Border Gateway Protocol.", "npm module is installed by Node package manager"],
     invalid: [
+        {
+            text: "NPO organization is duplicated",
+            errors: [
+                {
+                    message: `"NPO organization" has duplicated suffix word. "NPO" stands for "Non-Profit Organization".`,
+                    index: 0
+                }
+            ]
+        },
         {
             text: "DAO object is Data Access Object",
             errors: [
                 {
-                    message: `"DAO object" uses duplicated suffix word. "DAO" stands for "Data Access Object".`,
+                    message: `"DAO object" has duplicated suffix word. "DAO" stands for "Data Access Object".`,
                     index: 0
                 }
             ]
@@ -17,7 +27,7 @@ tester.run("textlint-rule-no-duplicate-abbr", rule, {
             text: "This is BGP protocol",
             errors: [
                 {
-                    message: `"BGP protocol" uses duplicated suffix word. "BGP" stands for "Border Gateway Protocol".`,
+                    message: `"BGP protocol" has duplicated suffix word. "BGP" stands for "Border Gateway Protocol".`,
                     index: 8
                 }
             ]
@@ -26,7 +36,7 @@ tester.run("textlint-rule-no-duplicate-abbr", rule, {
             text: "This is BGP protocol",
             errors: [
                 {
-                    message: `"BGP protocol" uses duplicated suffix word. "BGP" stands for "Border Gateway Protocol".`,
+                    message: `"BGP protocol" has duplicated suffix word. "BGP" stands for "Border Gateway Protocol".`,
                     index: 8
                 }
             ]
@@ -35,7 +45,7 @@ tester.run("textlint-rule-no-duplicate-abbr", rule, {
             text: "これはBGPプロトコルです。",
             errors: [
                 {
-                    message: `"BGPプロトコルです。" uses duplicated suffix word. "BGP" stands for "Border Gateway Protocol".`,
+                    message: `"BGPプロトコルです。" has duplicated suffix word. "BGP" stands for "Border Gateway Protocol".`,
                     index: 3
                 }
             ]