jmdict 1351360 Active (id#2327935)
笑う [ichi1,news1,nf22] ； 嗤う [rK] ； 哂う [sK] ； 咲う [sK]
【 わらう [ichi1,news1,nf22] 】
  1. [v5u,vi]
    • to laugh
    Cross references:
    • ⇐ see: 1351280 笑い【わらい】 1. laugh; laughter
  2. [v5u,vi]
    • to smile
    Cross references:
    • ⇐ see: 1351280 笑い【わらい】 2. smile
  3. [v5u,vt]
    《esp. 嗤う》
    • to sneer
    • to ridicule
    Cross references:
    • ⇐ see: 1351280 笑い【わらい】 3. sneer
  4. [v5u,vi]
    《as 笑ってしまう or 笑っちゃう》
    • to be dumbfounded
    • to be flabbergasted
Conjugations
History:
    • A 2024-12-20 05:02:46 Jim Breen (id#2327935)
    • A* 2024-12-18 21:09:35 Sombrero1 (id#2327771)
    • Comments
      By the current policy 嗤う and 咲う should be [rK] if I'm not mistaken, I see why there can be [sK] for 咲う, given the marginal usage, but 嗤う should be [rK].
    • Refs
      Google N-gram Corpus Counts
╭─ーーー─┬───────────┬───────╮
│ 笑う　 │ 2.963.959 │ 96.0% │
│ 嗤う　 │    64.861 │  2.1% │daijs, meikyo, sankoku, shinsen, Jitsuyo, Gendai ; [rK]
│ 哂う　 │     4.689 │  0.2% │
│ 咲う　 │     1.462 │  0.0% │
│ わらう │    53.950 │  1.7% │
╰─ーーー─┴───────────┴───────╯

Second sense in shinsen: ❷［嗤う］...
Also in some way specified for the second sense in other kokugos as well, and to be consistent with with the 笑い entry.

I am skeptical of that [vi] for the ridicule sense, every kokugo apart from sankoku that distinguishes the senses into transitivity has only [vt] for this sense.
    • Diff
      @@ -11 +11,5 @@
-<keb>咲う</keb>
+<keb>嗤う</keb>
+<ke_inf>&rK;</ke_inf>
+</k_ele>
+<k_ele>
+<keb>哂う</keb>
@@ -15,5 +19 @@
-<keb>嗤う</keb>
-<ke_inf>&sK;</ke_inf>
-</k_ele>
-<k_ele>
-<keb>哂う</keb>
+<keb>咲う</keb>
@@ -41,2 +41 @@
-<pos>&vi;</pos>
-<s_inf>occ. written as 嗤う</s_inf>
+<s_inf>esp. 嗤う</s_inf>
    • A 2024-11-17 23:47:29 Jim Breen (id#2322724)
    • Comments
      OK
    • Diff
      @@ -12 +12 @@
-<ke_inf>&rK;</ke_inf>
+<ke_inf>&sK;</ke_inf>
    • A* 2024-11-17 19:20:09 parfait8 (id#2322687)
    • Comments
      咲う can probably be hidden
    • Refs
      sankoku, smk, meikyo, etc.
    • Diff
      @@ -11 +11 @@
-<keb>嗤う</keb>
+<keb>咲う</keb>
@@ -15,2 +15,2 @@
-<keb>咲う</keb>
-<ke_inf>&rK;</ke_inf>
+<keb>嗤う</keb>
+<ke_inf>&sK;</ke_inf>
@@ -39,0 +40 @@
+<pos>&vt;</pos>
@@ -41 +42 @@
-<s_inf>esp. 嗤う</s_inf>
+<s_inf>occ. written as 嗤う</s_inf>
    • A 2022-12-17 20:14:31 Jim Breen (id#2215976)
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