diff --git a/src/main/java/site/sonisori/sonisori/controller/SignWordController.java b/src/main/java/site/sonisori/sonisori/controller/SignWordController.java
index 209aa7a..5d40f0a 100644
--- a/src/main/java/site/sonisori/sonisori/controller/SignWordController.java
+++ b/src/main/java/site/sonisori/sonisori/controller/SignWordController.java
@@ -2,12 +2,18 @@
 
 import java.util.List;
 
+import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
+import jakarta.validation.Valid;
 import lombok.RequiredArgsConstructor;
+import site.sonisori.sonisori.common.response.SuccessResponse;
+import site.sonisori.sonisori.dto.signword.SignWordRequest;
 import site.sonisori.sonisori.dto.signword.SignWordResponse;
 import site.sonisori.sonisori.service.SignWordService;
 
@@ -22,4 +28,10 @@ public ResponseEntity<List<SignWordResponse>> getAllSignWords() {
 		List<SignWordResponse> signWords = signWordService.getAllSignWords();
 		return ResponseEntity.ok(signWords);
 	}
+
+	@PostMapping("/admin/words")
+	public ResponseEntity<SuccessResponse> addSignWordByAdmin(@RequestBody @Valid SignWordRequest signWordRequest) {
+		SuccessResponse successResponse = signWordService.addSignWord(signWordRequest);
+		return ResponseEntity.status(HttpStatus.CREATED).body(successResponse);
+	}
 }
diff --git a/src/main/java/site/sonisori/sonisori/dto/signword/SignWordRequest.java b/src/main/java/site/sonisori/sonisori/dto/signword/SignWordRequest.java
new file mode 100644
index 0000000..a517365
--- /dev/null
+++ b/src/main/java/site/sonisori/sonisori/dto/signword/SignWordRequest.java
@@ -0,0 +1,15 @@
+package site.sonisori.sonisori.dto.signword;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Size;
+import site.sonisori.sonisori.common.constants.ErrorMessage;
+
+public record SignWordRequest(
+	@NotBlank(message = ErrorMessage.INVALID_VALUE)
+	@Size(max = 50, message = ErrorMessage.INVALID_VALUE)
+	String word,
+
+	@Size(max = 500, message = ErrorMessage.INVALID_VALUE)
+	String description
+) {
+}
diff --git a/src/main/java/site/sonisori/sonisori/service/SignWordService.java b/src/main/java/site/sonisori/sonisori/service/SignWordService.java
index c5410ee..0699693 100644
--- a/src/main/java/site/sonisori/sonisori/service/SignWordService.java
+++ b/src/main/java/site/sonisori/sonisori/service/SignWordService.java
@@ -4,8 +4,11 @@
 import java.util.stream.Collectors;
 
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
 import lombok.RequiredArgsConstructor;
+import site.sonisori.sonisori.common.response.SuccessResponse;
+import site.sonisori.sonisori.dto.signword.SignWordRequest;
 import site.sonisori.sonisori.dto.signword.SignWordResponse;
 import site.sonisori.sonisori.entity.SignWord;
 import site.sonisori.sonisori.repository.SignWordRepository;
@@ -21,4 +24,15 @@ public List<SignWordResponse> getAllSignWords() {
 			.map(SignWord::toDto)
 			.collect(Collectors.toList());
 	}
+
+	@Transactional
+	public SuccessResponse addSignWord(SignWordRequest signWordRequest) {
+		SignWord signWord = SignWord.builder()
+			.word(signWordRequest.word())
+			.description(signWordRequest.description())
+			.build();
+
+		Long id = signWordRepository.save(signWord).getId();
+		return new SuccessResponse(id);
+	}
 }