diff --git a/src/commands/search.ts b/src/commands/search.ts
index 69fc5f0..e074c6b 100644
--- a/src/commands/search.ts
+++ b/src/commands/search.ts
@@ -37,8 +37,8 @@ export async function execute(interaction: ChatInputCommandInteraction) {
 	const response = results.length
 		? results
 				.map(
-					({ word, meaning, extra, type }) =>
-						`${word} (${type}): ${meaning} ${extra?.join(' ') ?? ''}`
+					({ word, meaning, impl, type }) =>
+						`${word} (${type}): ${meaning}${impl ? ` – ${impl}` : ''}`
 				)
 				.join('\n')
 		: 'No results found.';
diff --git a/src/lib/kumilinwa/search.ts b/src/lib/kumilinwa/search.ts
index 305fe2b..c505f8c 100644
--- a/src/lib/kumilinwa/search.ts
+++ b/src/lib/kumilinwa/search.ts
@@ -6,15 +6,19 @@ export async function searchLangSpec(
 	matching?: MatchType
 ): Promise<FullEntry[]> {
 	const matchWord = matching === 'word' || !matching,
-		matchMeaning = matching === 'meaning' || !matching;
+		matchMeaning = matching === 'meaning' || !matching,
+		matchImpl = matching === 'impl' || !matching,
+		matchObscurism = matching === 'obscurism' || !matching;
 	const results: FullEntry[] = [];
 	for (const entry of await CompleteLangSpec())
 		if (
 			(matchWord && entry.word.includes(query)) ||
-			(matchMeaning && entry.meaning.includes(query))
+			(matchMeaning && (entry.meaning ?? entry.impl!).includes(query)) ||
+			(matchImpl && entry.impl?.includes(query)) ||
+			(matchObscurism && entry.obscurism?.includes(query))
 		)
 			results.push(entry);
 	return results;
 }
 
-export type MatchType = 'word' | 'meaning';
+export type MatchType = 'word' | 'meaning' | 'impl' | 'obscurism' | 'all';
diff --git a/src/lib/kumilinwa/types.ts b/src/lib/kumilinwa/types.ts
index c12d9b3..8b304ce 100644
--- a/src/lib/kumilinwa/types.ts
+++ b/src/lib/kumilinwa/types.ts
@@ -1,17 +1,18 @@
+/**
+ * The type of the entry in each separated file (i.e. verbs.json)
+ */
 export interface Section {
-	title?: string;
-	type: WordType;
+	title: string | null;
 	headers: string[];
+	type: WordType;
 	entries: Entry[];
 }
 
-/**
- * The type of the entry in each separated file (i.e. verbs.json)
- */
 export interface Entry {
 	word: string;
-	meaning: string;
-	extra?: string[];
+	meaning: string | null;
+	impl: string | null;
+	obscurism: string | null;
 }
 
 /**
@@ -36,4 +37,5 @@ export type WordType =
 	| 'preposition'
 	| 'pronoun'
 	| 'suffix'
-	| 'verb';
+	| 'verb'
+	| 'article';