diff --git a/contracts/helpers/navigator/SeaportNavigator.sol b/contracts/helpers/navigator/SeaportNavigator.sol
index c8aae71e..5ff76a73 100644
--- a/contracts/helpers/navigator/SeaportNavigator.sol
+++ b/contracts/helpers/navigator/SeaportNavigator.sol
@@ -115,7 +115,7 @@ contract SeaportNavigator is SeaportNavigatorInterface {
      * @param tokenIds An array of integer token IDs.
      * @param id       The integer token ID to generate a proof for.
      *
-     * @return Merkle proof that the given token ID is  amember of the criteria
+     * @return Merkle proof that the given token ID is a member of the criteria
      *         tree containing the given token IDs.
      */
     function criteriaProof(
diff --git a/contracts/helpers/navigator/lib/NavigatorCriteriaResolverLib.sol b/contracts/helpers/navigator/lib/NavigatorCriteriaResolverLib.sol
index 4198760a..125fe29c 100644
--- a/contracts/helpers/navigator/lib/NavigatorCriteriaResolverLib.sol
+++ b/contracts/helpers/navigator/lib/NavigatorCriteriaResolverLib.sol
@@ -20,7 +20,7 @@ library NavigatorCriteriaResolverLib {
      * @dev Calculate criteria resolvers, merkle proofs, and criteria merkle
      *      roots for the provided orders and criteria constraints. Modifies
      *      orders in place to add criteria merkle roots to the appropriate
-     *      offer/consdieration items. Adds calculated criteria resolvers to
+     *      offer/consideration items. Adds calculated criteria resolvers to
      *      the NavigatorResponse.
      */
     function withCriteria(
diff --git a/contracts/helpers/navigator/lib/OrderStructureLib.sol b/contracts/helpers/navigator/lib/OrderStructureLib.sol
index d176f006..9495ab85 100644
--- a/contracts/helpers/navigator/lib/OrderStructureLib.sol
+++ b/contracts/helpers/navigator/lib/OrderStructureLib.sol
@@ -191,7 +191,7 @@ library OrderStructureLib {
         if (hasCriteria) {
             // Unless it's a contract order
             if (isContractOrder) {
-                // And the contract order's critera are all zero
+                // And the contract order's criteria are all zero
                 if (hasNonzeroCriteria) {
                     return Structure.ADVANCED;
                 }
diff --git a/contracts/helpers/navigator/lib/SeaportNavigatorInterface.sol b/contracts/helpers/navigator/lib/SeaportNavigatorInterface.sol
index 645930e2..4a81c354 100644
--- a/contracts/helpers/navigator/lib/SeaportNavigatorInterface.sol
+++ b/contracts/helpers/navigator/lib/SeaportNavigatorInterface.sol
@@ -33,7 +33,7 @@ interface SeaportNavigatorInterface {
      * @param tokenIds An array of integer token IDs.
      * @param id       The integer token ID to generate a proof for.
      *
-     * @return Merkle proof that the given token ID is  amember of the criteria
+     * @return Merkle proof that the given token ID is a member of the criteria
      *         tree containing the given token IDs.
      */
     function criteriaProof(
diff --git a/contracts/helpers/navigator/lib/SeaportNavigatorTypes.sol b/contracts/helpers/navigator/lib/SeaportNavigatorTypes.sol
index fa87d827..97bca884 100644
--- a/contracts/helpers/navigator/lib/SeaportNavigatorTypes.sol
+++ b/contracts/helpers/navigator/lib/SeaportNavigatorTypes.sol
@@ -136,7 +136,7 @@ struct NavigatorResponse {
      */
     OrderDetails[] orderDetails;
     /**
-     * @dev Calculated fulfillment components and combined Fullfiilments.
+     * @dev Calculated fulfillment components and combined Fullfilments.
      */
     FulfillmentComponent[][] offerFulfillments;
     FulfillmentComponent[][] considerationFulfillments;