diff --git a/.changeset/word-break-updates.md b/.changeset/word-break-updates.md
new file mode 100644
index 00000000000..95d664fad32
--- /dev/null
+++ b/.changeset/word-break-updates.md
@@ -0,0 +1,7 @@
+---
+'@spectrum-web-components/textfield': patch
+'@spectrum-web-components/sidenav': patch
+'@spectrum-web-components/tooltip': patch
+---
+
+Replace deprecated `word-break: break-word` with `overflow-wrap: break-word` to align with modern CSS standards and improve cross-browser compatibility. This property was deprecated in Chrome 44 (July 2015) in favor of the standardized `overflow-wrap` property.
diff --git a/packages/sidenav/src/spectrum-sidenav-item.css b/packages/sidenav/src/spectrum-sidenav-item.css
index e92c2afb54e..c94ce9082e2 100644
--- a/packages/sidenav/src/spectrum-sidenav-item.css
+++ b/packages/sidenav/src/spectrum-sidenav-item.css
@@ -130,7 +130,7 @@ governing permissions and limitations under the License.
 #item-link {
     padding-inline: var(--mod-sidenav-inline-padding, var(--spectrum-sidenav-inline-padding));
     box-sizing: border-box;
-    word-break: break-word;
+    overflow-wrap: break-word;
     hyphens: auto;
     cursor: pointer;
     transition:
diff --git a/packages/textfield/src/textfield.css b/packages/textfield/src/textfield.css
index ab8e418ec00..ba1816b2861 100644
--- a/packages/textfield/src/textfield.css
+++ b/packages/textfield/src/textfield.css
@@ -56,8 +56,7 @@ textarea {
 
 #sizer {
     block-size: auto;
-    /* stylelint-disable-next-line declaration-property-value-keyword-no-deprecated */
-    word-break: break-word;
+    overflow-wrap: break-word;
     opacity: 0;
     white-space: pre-line;
 }
diff --git a/packages/tooltip/src/spectrum-tooltip.css b/packages/tooltip/src/spectrum-tooltip.css
index d4fe6adcead..f7d7bc9fe2b 100644
--- a/packages/tooltip/src/spectrum-tooltip.css
+++ b/packages/tooltip/src/spectrum-tooltip.css
@@ -92,7 +92,7 @@ governing permissions and limitations under the License.
     font-size: var(--mod-tooltip-font-size, var(--spectrum-tooltip-font-size));
     font-weight: var(--mod-tooltip-font-weight, var(--spectrum-tooltip-font-weight));
     line-height: var(--mod-tooltip-line-height, var(--spectrum-tooltip-line-height));
-    word-break: break-word;
+    overflow-wrap: break-word;
     -webkit-font-smoothing: antialiased;
     cursor: default;
     -webkit-user-select: none;