diff --git a/src/lib/answer-render-policy.ts b/src/lib/answer-render-policy.ts
index 12f7b88497..ed8e43576b 100644
--- a/src/lib/answer-render-policy.ts
+++ b/src/lib/answer-render-policy.ts
@@ -493,6 +493,23 @@ function blockDecisions(args: {
   } satisfies Record<AnswerRenderBlock, AnswerRenderDecision>;
 }
 
+// P4b: the copy/paste block previously emitted the bare enum ("strong"/"moderate"/"limited"/"none"
+// support) — which reads oddly ("none support") and gives no plain-English cue about how well the
+// source matched. Gloss it into a clinician-readable phrase so pasted drafts carry interpretable
+// source strength.
+export function describeSourceStrengthForCopy(strength: SourceStrength | "none"): string {
+  switch (strength) {
+    case "strong":
+      return "strong match";
+    case "moderate":
+      return "moderate match";
+    case "limited":
+      return "limited match";
+    default:
+      return "match strength not rated";
+  }
+}
+
 export function formatAnswerRenderCopyText(args: {
   answerText: string;
   trust: AnswerRenderTrust;
@@ -501,7 +518,8 @@ export function formatAnswerRenderCopyText(args: {
 }) {
   const sourceLines = args.primarySources.length
     ? args.primarySources.map(
-        (source, index) => `${index + 1}. ${source.label} | ${source.sourceStrength} support | ${source.href}`,
+        (source, index) =>
+          `${index + 1}. ${source.label} | ${describeSourceStrengthForCopy(source.sourceStrength)} | ${source.href}`,
       )
     : ["No policy-approved sources were attached."];
   const warningLines = args.warnings.length ? args.warnings.map((warning) => `- ${warning}`) : ["- None"];
diff --git a/tests/answer-render-policy.test.ts b/tests/answer-render-policy.test.ts
index d53edabe91..5cf6f2a00f 100644
--- a/tests/answer-render-policy.test.ts
+++ b/tests/answer-render-policy.test.ts
@@ -1,5 +1,9 @@
 import { describe, expect, it } from "vitest";
-import { buildAnswerRenderModel } from "../src/lib/answer-render-policy";
+import {
+  buildAnswerRenderModel,
+  describeSourceStrengthForCopy,
+  formatAnswerRenderCopyText,
+} from "../src/lib/answer-render-policy";
 import type {
   BestSourceRecommendation,
   Citation,
@@ -262,4 +266,40 @@ describe("answer render policy", () => {
     expect(model.quoteCards).toHaveLength(0);
     expect(model.allowedBlocks).not.toContain("quoteCards");
   });
+
+  describe("copy-text source-strength gloss (P4b)", () => {
+    it("glosses each strength into a clinician-readable phrase and avoids the odd 'none support'", () => {
+      expect(describeSourceStrengthForCopy("strong")).toBe("strong match");
+      expect(describeSourceStrengthForCopy("moderate")).toBe("moderate match");
+      expect(describeSourceStrengthForCopy("limited")).toBe("limited match");
+      expect(describeSourceStrengthForCopy("none")).toBe("match strength not rated");
+    });
+
+    it("renders the glossed strength in the copy block, not the bare enum", () => {
+      const link = (
+        overrides: Partial<Parameters<typeof formatAnswerRenderCopyText>[0]["primarySources"][number]>,
+      ) => ({
+        id: "s1",
+        chunk_id: "c1",
+        document_id: "d1",
+        title: "T",
+        file_name: "f.pdf",
+        page_number: 4,
+        href: "/documents/doc-1?page=4",
+        label: "Clozapine Monitoring (AKG)",
+        sourceStrength: "strong" as const,
+        reason: "selected",
+        ...overrides,
+      });
+      const text = formatAnswerRenderCopyText({
+        answerText: "Withhold clozapine for a red-range result.",
+        trust: "high",
+        primarySources: [link({}), link({ label: "Legacy Note", href: "/documents/doc-2", sourceStrength: "none" })],
+        warnings: [],
+      });
+      expect(text).toContain("Clozapine Monitoring (AKG) | strong match | /documents/doc-1?page=4");
+      expect(text).toContain("Legacy Note | match strength not rated | /documents/doc-2");
+      expect(text).not.toContain("none support");
+    });
+  });
 });