diff --git a/src/core/mac/mac.hpp b/src/core/mac/mac.hpp
index a6c022d5d..ad7f95f7b 100644
--- a/src/core/mac/mac.hpp
+++ b/src/core/mac/mac.hpp
@@ -733,22 +733,22 @@ public:
     }
 
     /**
-     * This method returns CSL parent uncertanity, in ±10 us units.
+     * This method returns CSL parent uncertainty, in ±10 us units.
      *
-     * @retval CSL parent uncertanity, in ±10 us units.
+     * @retval CSL parent uncertainty, in ±10 us units.
      *
      */
-    uint8_t GetCslParentUncertanity(void) const { return mLinks.GetSubMac().GetCslParentUncertanity(); }
+    uint8_t GetCslParentUncertainty(void) const { return mLinks.GetSubMac().GetCslParentUncertainty(); }
 
     /**
-     * This method returns CSL parent uncertanity, in ±10 us units.
+     * This method returns CSL parent uncertainty, in ±10 us units.
      *
-     * @param[in] aCslParentUncert  CSL parent uncertanity, in ±10 us units.
+     * @param[in] aCslParentUncert  CSL parent uncertainty, in ±10 us units.
      *
      */
-    void SetCslParentUncertanity(uint8_t aCslParentUncert)
+    void SetCslParentUncertainty(uint8_t aCslParentUncert)
     {
-        mLinks.GetSubMac().SetCslParentUncertanity(aCslParentUncert);
+        mLinks.GetSubMac().SetCslParentUncertainty(aCslParentUncert);
     }
 
 #endif // OPENTHREAD_CONFIG_MAC_CSL_RECEIVER_ENABLE
diff --git a/src/core/mac/sub_mac.hpp b/src/core/mac/sub_mac.hpp
index 9ab0c0957..2fd7982ee 100644
--- a/src/core/mac/sub_mac.hpp
+++ b/src/core/mac/sub_mac.hpp
@@ -459,20 +459,20 @@ public:
     void SetCslParentClockAccuracy(uint8_t aCslParentAccuracy) { mCslParentAccuracy = aCslParentAccuracy; }
 
     /**
-     * This method sets CSL parent uncertanity, in ±10 us units.
+     * This method sets CSL parent uncertainty, in ±10 us units.
      *
-     * @retval CSL parent uncertanity, in ±10 us units.
+     * @retval CSL parent uncertainty, in ±10 us units.
      *
      */
-    uint8_t GetCslParentUncertanity(void) const { return mCslParentUncert; }
+    uint8_t GetCslParentUncertainty(void) const { return mCslParentUncert; }
 
     /**
-     * This method returns CSL parent uncertanity, in ±10 us units.
+     * This method returns CSL parent uncertainty, in ±10 us units.
      *
-     * @param[in] aCslParentUncert  CSL parent uncertanity, in ±10 us units.
+     * @param[in] aCslParentUncert  CSL parent uncertainty, in ±10 us units.
      *
      */
-    void SetCslParentUncertanity(uint8_t aCslParentUncert) { mCslParentUncert = aCslParentUncert; }
+    void SetCslParentUncertainty(uint8_t aCslParentUncert) { mCslParentUncert = aCslParentUncert; }
 
 #endif // OPENTHREAD_CONFIG_MAC_CSL_RECEIVER_ENABLE
 
diff --git a/src/core/thread/mle.cpp b/src/core/thread/mle.cpp
index fd1a03eeb..48198697c 100644
--- a/src/core/thread/mle.cpp
+++ b/src/core/thread/mle.cpp
@@ -3302,7 +3302,7 @@ bool Mle::IsBetterParent(uint16_t               aRloc16,
     {
         cslMetric = CalcParentCslMetric(aCslClockAccuracy, aCslUncertainty);
         candidateCslMetric =
-            CalcParentCslMetric(mParentCandidate.GetCslClockAccuracy(), mParentCandidate.GetCslClockUncertianity());
+            CalcParentCslMetric(mParentCandidate.GetCslClockAccuracy(), mParentCandidate.GetCslClockUncertainty());
         if (candidateCslMetric != cslMetric)
         {
             ExitNow(rval = (cslMetric < candidateCslMetric));
@@ -3508,7 +3508,7 @@ void Mle::HandleParentResponse(const Message &aMessage, const Ip6::MessageInfo &
     mParentCandidate.SetKeySequence(aKeySequence);
 #if OPENTHREAD_CONFIG_MAC_CSL_RECEIVER_ENABLE
     mParentCandidate.SetCslClockAccuracy(clockAccuracy.GetCslClockAccuracy());
-    mParentCandidate.SetCslClockUncertianity(clockAccuracy.GetCslUncertainty());
+    mParentCandidate.SetCslClockUncertainty(clockAccuracy.GetCslUncertainty());
 #endif
 
     mParentPriority         = connectivity.GetParentPriority();
@@ -3639,7 +3639,7 @@ void Mle::HandleChildIdResponse(const Message &         aMessage,
     mParentCandidate.Clear();
 
 #if OPENTHREAD_CONFIG_MAC_CSL_RECEIVER_ENABLE
-    Get<Mac::Mac>().SetCslParentUncertanity(mParent.GetCslClockUncertianity());
+    Get<Mac::Mac>().SetCslParentUncertainty(mParent.GetCslClockUncertainty());
     Get<Mac::Mac>().SetCslParentClockAccuracy(mParent.GetCslClockAccuracy());
 #endif
 
diff --git a/src/core/thread/topology.hpp b/src/core/thread/topology.hpp
index 3d5ae0184..3267e9af5 100644
--- a/src/core/thread/topology.hpp
+++ b/src/core/thread/topology.hpp
@@ -1347,7 +1347,7 @@ public:
         Neighbor::Init(aInstance);
 #if OPENTHREAD_CONFIG_MAC_CSL_RECEIVER_ENABLE
         SetCslClockAccuracy(kCslWorstCrystalPpm);
-        SetCslClockUncertianity(kCslWorstUncertainty);
+        SetCslClockUncertainty(kCslWorstUncertainty);
 #endif
     }
 
@@ -1423,20 +1423,20 @@ public:
     void SetCslClockAccuracy(uint8_t aCslClockAccuracy) { mCslClockAccuracy = aCslClockAccuracy; }
 
     /**
-     * This method get the CSL clock uncertianity of this router.
+     * This method get the CSL clock uncertainty of this router.
      *
-     * @returns The CSL clock uncertianity of this router.
+     * @returns The CSL clock uncertainty of this router.
      *
      */
-    uint8_t GetCslClockUncertianity(void) const { return mCslClockUncertianity; }
+    uint8_t GetCslClockUncertainty(void) const { return mCslClockUncertainty; }
 
     /**
-     * This method sets the CSL clock uncertianity of this router.
+     * This method sets the CSL clock uncertainty of this router.
      *
-     * @param[in]  aCost  The CSL clock uncertianity of this router.
+     * @param[in]  aCost  The CSL clock uncertainty of this router.
      *
      */
-    void SetCslClockUncertianity(uint8_t aCslClockUncertianity) { mCslClockUncertianity = aCslClockUncertianity; }
+    void SetCslClockUncertainty(uint8_t aCslClockUncertainty) { mCslClockUncertainty = aCslClockUncertainty; }
 #endif
 
 private:
@@ -1449,8 +1449,8 @@ private:
     uint8_t mCost : 4;     ///< The cost to this router via neighbor router
 #endif
 #if OPENTHREAD_CONFIG_MAC_CSL_RECEIVER_ENABLE
-    uint8_t mCslClockAccuracy;     ///< Crystal accuracy, in units of ± ppm.
-    uint8_t mCslClockUncertianity; ///< Scheduling uncertainty, in units of 10 us.
+    uint8_t mCslClockAccuracy;    ///< Crystal accuracy, in units of ± ppm.
+    uint8_t mCslClockUncertainty; ///< Scheduling uncertainty, in units of 10 us.
 #endif
 };