noun
well-made; well-done; great success
Describes something that turned out very well, such as a performance, work, or result. Often used in contexts like cooking, art, or projects.
今日の料理は大出来だった。
Today's cooking was a great success.
彼の絵は大出来で、みんなが褒めた。
His painting was well-done and everyone praised it.
上出来 also means 'well-done' or 'good result', but 大出来 emphasizes a greater degree of success or excellence.
Compound of 大 (おお, 'big, great') and 出来 (でき, 'result, outcome'). The exact historical derivation is uncertain, but the meaning is transparent from its components.