diff --git a/src/main/java/ai/elimu/web/content/word/WordCreateController.java b/src/main/java/ai/elimu/web/content/word/WordCreateController.java
index 6f208b732..0651f310c 100644
--- a/src/main/java/ai/elimu/web/content/word/WordCreateController.java
+++ b/src/main/java/ai/elimu/web/content/word/WordCreateController.java
@@ -121,7 +121,8 @@ public String handleSubmit(
         if (StringUtils.containsAny(word.getText(), " ")) {
             result.rejectValue("text", "WordSpace");
         }
-        
+        validateWord(word, result);
+
         if (result.hasErrors()) {
             model.addAttribute("word", word);
             model.addAttribute("timeStart", request.getParameter("timeStart"));
@@ -276,4 +277,20 @@ private void autoSelectLetterSoundCorrespondences(Word word) {
         
         word.setLetterSoundCorrespondences(letterSoundCorrespondences);
     }
+
+    private void validateWord(Word word, BindingResult result) {
+        Word existingWord = wordDao.readByTextAndType(word.getText(), word.getWordType());
+
+        if (existingWord != null) {
+            result.rejectValue("text", "NonUnique");
+        }
+
+        if (StringUtils.containsAny(word.getText(), " ")) {
+            result.rejectValue("text", "WordSpace");
+        }
+
+        if (word.getText() != null && word.getText().matches("[0-9\\W_]*")) {
+            result.rejectValue("text", "WordNumbers");
+        }
+    }
 }
diff --git a/src/main/webapp/WEB-INF/i18n/errors_en.properties b/src/main/webapp/WEB-INF/i18n/errors_en.properties
index 63b76e5be..cea81831c 100644
--- a/src/main/webapp/WEB-INF/i18n/errors_en.properties
+++ b/src/main/webapp/WEB-INF/i18n/errors_en.properties
@@ -32,3 +32,4 @@ formatHint.Integer=Number (e.g. "5000")
 image.too.small=The image width must be at least 640px
 emoji.unicode.version=Only emojis up to Unicode version 9
 WordSpace=Spaces are not allowed
+WordNumbers=A word cannot consist of numbers
diff --git a/src/test/java/ai/elimu/web/content/word/WordCreateControllerTest.java b/src/test/java/ai/elimu/web/content/word/WordCreateControllerTest.java
index 2395dc5e2..6b621df53 100644
--- a/src/test/java/ai/elimu/web/content/word/WordCreateControllerTest.java
+++ b/src/test/java/ai/elimu/web/content/word/WordCreateControllerTest.java
@@ -19,6 +19,12 @@
 import org.springframework.test.web.servlet.RequestBuilder;
 import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
 import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+import org.springframework.validation.BindingResult;
+import org.springframework.validation.ObjectError;
+
+import java.util.List;
+
+import static org.junit.Assert.*;
 
 @RunWith(SpringJUnit4ClassRunner.class)
 @ContextConfiguration(locations={
@@ -34,7 +40,7 @@ public class WordCreateControllerTest {
     
     @Autowired
     private WordDao wordDao;
-    
+
     @Before
     public void setup() {
         assertNotNull(wordCreateController);
@@ -61,29 +67,82 @@ public void testHandleSubmit_emptyText() throws Exception {
 //        assertEquals(HttpStatus.BAD_REQUEST.value(), mvcResult.getResponse().getStatus());
 //        assertEquals("content/word/create", mvcResult.getModelAndView().getViewName());
     }
-    
+
     @Test
     public void testHandleSubmit_success() throws Exception {
         Word wordHello = wordDao.readByText("hello");
         assertThat(wordHello, is(nullValue()));
-        
+
         int numberOfWordsBefore = wordDao.readAll().size();
-        
+
         RequestBuilder requestBuilder = MockMvcRequestBuilders
                 .post("/content/word/create")
                 .param("timeStart", String.valueOf(System.currentTimeMillis()))
                 .param("text", "hello")
                 .contentType(MediaType.APPLICATION_FORM_URLENCODED_VALUE);
         MvcResult mvcResult = mockMvc.perform(requestBuilder).andReturn();
-        
+
         wordHello = wordDao.readByText("hello");
         assertThat(wordHello, not(nullValue()));
         assertThat(wordHello.getText(), is("hello"));
-        
+
         int numberOfWordsAfter = wordDao.readAll().size();
         assertThat(numberOfWordsAfter, is(numberOfWordsBefore + 1));
-        
+
         assertEquals(HttpStatus.MOVED_TEMPORARILY.value(), mvcResult.getResponse().getStatus());
         assertEquals("redirect:/content/word/list#" + wordHello.getId(), mvcResult.getModelAndView().getViewName());
     }
+
+    @Test
+    public void testValidateDigitsInWord() throws Exception {
+        assertTrue(containGivenErrorCode(getBindingResult(getRequestWithSpecificText("10")).getAllErrors(), "WordNumbers"));
+        assertTrue(containGivenErrorCode(getBindingResult(getRequestWithSpecificText("'10'")).getAllErrors(), "WordNumbers"));
+        assertTrue(containGivenErrorCode(getBindingResult(getRequestWithSpecificText("\"10\"")).getAllErrors(), "WordNumbers"));
+        assertTrue(containGivenErrorCode(getBindingResult(getRequestWithSpecificText("[10]")).getAllErrors(), "WordNumbers"));
+        assertTrue(containGivenErrorCode(getBindingResult(getRequestWithSpecificText("1'0")).getAllErrors(), "WordNumbers"));
+        assertTrue(containGivenErrorCode(getBindingResult(getRequestWithSpecificText("1-0")).getAllErrors(), "WordNumbers"));
+        assertTrue(containGivenErrorCode(getBindingResult(getRequestWithSpecificText("1*0")).getAllErrors(), "WordNumbers"));
+        assertTrue(containGivenErrorCode(getBindingResult(getRequestWithSpecificText("1/0")).getAllErrors(), "WordNumbers"));
+        assertTrue(containGivenErrorCode(getBindingResult(getRequestWithSpecificText("1!0")).getAllErrors(), "WordNumbers"));
+        assertTrue(containGivenErrorCode(getBindingResult(getRequestWithSpecificText("1#0")).getAllErrors(), "WordNumbers"));
+        assertTrue(containGivenErrorCode(getBindingResult(getRequestWithSpecificText("1%0")).getAllErrors(), "WordNumbers"));
+        assertTrue(containGivenErrorCode(getBindingResult(getRequestWithSpecificText("1()0")).getAllErrors(), "WordNumbers"));
+        assertTrue(containGivenErrorCode(getBindingResult(getRequestWithSpecificText("1_0")).getAllErrors(), "WordNumbers"));
+        assertTrue(containGivenErrorCode(getBindingResult(getRequestWithSpecificText("1+0")).getAllErrors(), "WordNumbers"));
+        assertTrue(containGivenErrorCode(getBindingResult(getRequestWithSpecificText("1{}0")).getAllErrors(), "WordNumbers"));
+        assertTrue(containGivenErrorCode(getBindingResult(getRequestWithSpecificText("1|?><.,0")).getAllErrors(), "WordNumbers"));
+        assertFalse(containGivenErrorCode(getBindingResult(getRequestWithSpecificText("10th")).getAllErrors(), "WordNumbers"));
+    }
+
+    @Test
+    public void testValidateSpacesInWord() throws Exception {
+        assertTrue(containGivenErrorCode(getBindingResult(getRequestWithSpecificText("Test Test")).getAllErrors(), "WordSpace"));
+        assertTrue(containGivenErrorCode(getBindingResult(getRequestWithSpecificText(" Test")).getAllErrors(), "WordSpace"));
+        assertTrue(containGivenErrorCode(getBindingResult(getRequestWithSpecificText("Test ")).getAllErrors(), "WordSpace"));
+    }
+
+    private RequestBuilder getRequestWithSpecificText(String text) {
+        return MockMvcRequestBuilders
+                .post("/content/word/create")
+                .param("timeStart", String.valueOf(System.currentTimeMillis()))
+                .param("text", text)
+                .contentType(MediaType.APPLICATION_FORM_URLENCODED_VALUE);
+    }
+
+    private BindingResult getBindingResult(RequestBuilder requestBuilder) throws Exception {
+        MvcResult mvcResult = mockMvc.perform(requestBuilder).andReturn();
+        return (BindingResult) mvcResult.getModelAndView().getModel().get("org.springframework.validation.BindingResult.word");
+    }
+
+    private boolean containGivenErrorCode(List<ObjectError> objectErrorList, String error) {
+        for (ObjectError objectError : objectErrorList) {
+            for (String errorCode : objectError.getCodes()) {
+                if (errorCode.equals(error)) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
 }