diff --git a/languagetool-language-modules/pt/src/main/resources/org/languagetool/resource/pt/spelling.txt b/languagetool-language-modules/pt/src/main/resources/org/languagetool/resource/pt/spelling.txt
index 1c54f7db3ddf..500298926142 100644
--- a/languagetool-language-modules/pt/src/main/resources/org/languagetool/resource/pt/spelling.txt
+++ b/languagetool-language-modules/pt/src/main/resources/org/languagetool/resource/pt/spelling.txt
@@ -30,6 +30,7 @@ blasé
 bluff
 body
 boid
+boids
 boîte
 bold
 bonehead
diff --git a/languagetool-language-modules/pt/src/main/resources/org/languagetool/rules/pt/style.xml b/languagetool-language-modules/pt/src/main/resources/org/languagetool/rules/pt/style.xml
index 407532285649..6bfd96a108b5 100644
--- a/languagetool-language-modules/pt/src/main/resources/org/languagetool/rules/pt/style.xml
+++ b/languagetool-language-modules/pt/src/main/resources/org/languagetool/rules/pt/style.xml
@@ -3683,6 +3683,20 @@ USA
         </rule>
 
 
+        <rule id='COISAS_FUNCIONALIDADES' name="Coisas → funcionalidades" tone_tags='formal' default='temp_off'>
+            <pattern>
+                <token skip='4' inflected='yes' regexp='no'>implementar</token>
+                <marker>
+                    <token regexp='yes'>coisas?</token>
+                </marker>
+            </pattern>
+            <message>Num contexto formal empregue <suggestion><match no='2' postag='N.+' postag_regexp='yes'>funcionalidade</match></suggestion>.</message>
+            <example correction="funcionalidade">Vamos implementar uma <marker>coisa</marker> nova no software.</example>
+            <example correction="funcionalidades">Vamos implementar <marker>coisas</marker> novas no software.</example>
+            <example>Vou implementar funcionalidades na app.</example>
+        </rule>
+
+
         <rule id='ESTAR_AQUI_PARA_INF_VIR_INF' name="'Estar aqui para' Inf. → 'Vir Inf.'" tone_tags='formal'>
             <pattern>
                 <marker>