KZ

 Kuchi-zamishii (口寂しい / くちさみしい) is a Japanese expression that literally means “lonely mouth.”

It describes the feeling of wanting to eat even when you’re not actually hungry — just because your mouth feels bored, empty, or you want something to nibble on.

It’s commonly used for:

• Snacking while watching TV
• Eating out of boredom or habit
• Wanting gum, chips, or sweets just to have something in your mouth
• Late-night “I’m not hungry but I want something” cravings

Example:

• 「お腹すいてないけど、口寂しい。」
  “I’m not hungry, but my mouth feels lonely.”

It’s similar to:

• “mindless snacking”
• “boredom eating”
• “oral fixation” (but less clinical)

There’s a cultural nuance too — in Japan people often keep small snacks, tea, or gum specifically for kuchi-zamishii moments.