diff --git a/seed-src/KT.Adverb.csv b/seed-src/KT.Adverb.csv
index c9692ec7b405d58b35bf3ce7ee4b18b5242e45eb..02b768473080d0382fada13220e9ad07bd8b1ca5 100644
--- a/seed-src/KT.Adverb.csv
+++ b/seed-src/KT.Adverb.csv
@@ -62,6 +62,7 @@
 尙,0,0,0,v,副詞,頻度,重複,*,*,尙,尚お,ナオ,*
 尤,0,0,0,v,副詞,程度,やや高度,*,*,尤,尤も,モットモ,*
 就,0,0,0,v,副詞,時相,緊接,*,*,就,就ち,スナワチ,*
+乃,0,0,0,v,副詞,時相,継起,*,*,乃,乃ち,スナワチ,*
 屢,0,0,0,v,副詞,頻度,頻繁,*,*,屢,屢,シバシバ,*
 已,0,0,0,v,副詞,時相,完了,*,*,已,已に,スデニ,*
 常,0,0,0,v,副詞,時相,恒常,*,*,常,常に,ツネニ,*