large feast; big meal
Colloquial noun for a lavish or abundant meal, often used in casual conversation.
Let's go out for a big feast tonight.
Whenever my grandmother visits, she always cooks a huge meal for us.
ご馳走 means a feast or treat in general; 大ご馳走 emphasizes the scale or abundance.
大盤振る舞い refers to lavish hospitality or spending freely, while 大ご馳走 focuses specifically on the food itself.
Standard kanji-kana mixed spelling; the prefix 大 is read おお here.
Kana spelling of the second element; less common but still seen.
Full kanji spelling; very rare and may be considered ateji or overly formal.
Compound of 大 (おお, 'big') + ご馳走 (ごちそう, 'feast'). The reading おおごちそう is standard; だいごちそう is a less common alternative reading.