diff --git a/frontend/src/lib/components/controls/TagInput.svelte b/frontend/src/lib/components/controls/TagInput.svelte
index 8870e9c..19581c6 100644
--- a/frontend/src/lib/components/controls/TagInput.svelte
+++ b/frontend/src/lib/components/controls/TagInput.svelte
@@ -1,7 +1,8 @@
 <script lang="ts">
-    import Icon from "../layout/Icon.svelte";
+  import Icon from "../layout/Icon.svelte";
 
   export let value: string[];
+  export let exclaimMode = false;
 
   let nextTag = "";
 
@@ -24,6 +25,14 @@
   }
 
   $: value = (value||[]).filter((e, i) => !value.slice(0, i).includes(e));
+
+  $: if (exclaimMode) {
+    value = (value||[]).filter((e, i) => (
+      e.startsWith("!")
+        ? !value.slice(i+1).includes(e.slice(1))
+        : !value.slice(i+1).includes("!"+e)
+    ));
+  }
 </script>
 
 <div class="tag-input">
diff --git a/frontend/src/lib/modals/SprintCreateUpdateModal.svelte b/frontend/src/lib/modals/SprintCreateUpdateModal.svelte
index 07c8590..05f588f 100644
--- a/frontend/src/lib/modals/SprintCreateUpdateModal.svelte
+++ b/frontend/src/lib/modals/SprintCreateUpdateModal.svelte
@@ -158,7 +158,7 @@
       <label for="aggregateName">Aggregate Name</label>
       <input name="aggregateName" type="text" bind:value={sprint.aggregateName} />
       <label for="tags">Tags</label>
-      <TagInput bind:value={sprint.tags} />
+      <TagInput exclaimMode bind:value={sprint.tags} />
       {#if sprint.kind != SprintKind.Items}
         <label for="aggregateValue">Aggregate Goal</label>
         <input name="aggregateValue" type="number" bind:value={sprint.aggregateRequired} />
diff --git a/ports/mysql/items.go b/ports/mysql/items.go
index eb809db..953e622 100644
--- a/ports/mysql/items.go
+++ b/ports/mysql/items.go
@@ -215,17 +215,36 @@ func (r *itemRepository) Fetch(ctx context.Context, filter models.ItemFilter) ([
 		}
 
 		res = genutils.RetainInPlace(res, func(item entities.Item) bool {
+			good := false
+
 			for _, tag := range filter.Tags {
-				if item.HasTag(tag) {
-					return true
-				} else if item.RequirementID != nil &&
-					(genutils.Contains(requirementTagMap[*item.RequirementID], tag) ||
-						genutils.Contains(projectTagMap[*item.ProjectID], tag)) {
-					return true
+				if strings.HasPrefix(tag, "!") {
+					tag = tag[1:]
+
+					if !item.HasTag(tag) {
+						if item.RequirementID != nil {
+							if !genutils.Contains(requirementTagMap[*item.RequirementID], tag) &&
+								!genutils.Contains(projectTagMap[*item.ProjectID], tag) {
+								return false
+							}
+						} else {
+							return false
+						}
+					}
+
+					good = true
+				} else {
+					if item.HasTag(tag) {
+						good = true
+					} else if item.RequirementID != nil &&
+						(genutils.Contains(requirementTagMap[*item.RequirementID], tag) ||
+							genutils.Contains(projectTagMap[*item.ProjectID], tag)) {
+						good = true
+					}
 				}
 			}
 
-			return false
+			return good
 		})
 	}