ランチranchi[1]atamadaka (head-high)

1. nounlunch
   あなたはこの店みせのランチがえらくお気に入きにいりですね。↗

   You are very fond of the lunch menu of this restaurant.
2. noun(Western-style) single-plate lunch set; plate lunch; lunch set

• 1.
  Synonym昼飯ひるめしCasualCasual, mostly male speech, as in 「昼飯食った？」. 「ランチ」 sounds trendier and is the usual word on restaurant menus.
• 2.
  Synonym昼ご飯ひるごはんNeutralThe most common everyday word for lunch, used by anyone. 「ランチ」 can also mean an ordinary lunch, but adds the sense of a lunch set.
• 3.
  Synonymお昼おひるCasualColloquial; covers both midday and the meal itself, as in 「お昼にしよう」. 「ランチ」 refers only to lunch or a lunch set.
• 4.
  Synonym昼食ちゅうしょくNeutralNeutral to formal, as in 「昼食をとる」; common in writing and on schedules. 「ランチ」 is more colloquial and also covers lunch sets.
• 5.
  SynonymランチョンFormalA loanword for a formal lunch or luncheon gathering, mostly in compounds like 「ランチョンマット」. In everyday speech, say 「ランチ」.
• 6.
  Synonym午餐ごさんWrittenWritten/formal word for lunch, seen in set phrases like 「午餐会」. Not used in daily conversation; say 「昼ご飯」 or 「ランチ」.
• 7.
  Synonym昼餐ちゅうさんWrittenA written word for lunch, rare in everyday use and found in articles or formal contexts. In speech, say 「昼ご飯」.
• 8.
  Related昼餉ひるげWrittenAn archaic, literary word for the midday meal, rarely used today. Modern speakers say 「昼ご飯」 or 「昼食」.

For everyday talk, 「昼ご飯」 and 「お昼」 are the defaults; 「昼食」 fits schedules and writing. Use 「ランチ」 for restaurant lunches and lunch sets, and 「昼飯」 for rough male speech. The rest are formal or literary: 「ランチョン」, 「午餐」, 「昼餐」, 「昼餉」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 昼食ちゅうしょく。
2. ひと皿さらでの簡単かんたんな定食ていしょく。