Improvement or progress in skill or ability; becoming better through practice or experience.
毎日練習したおかげで、英会話が上達した。
Thanks to daily practice, my conversational English improved.
ピアノの腕が上達するには時間がかかる。
It takes time for piano skills to improve.
彼女の描く絵はここ数年で目に見えて上達した。
Her drawings have visibly improved over the past few years.
短期で英語力を上達させるのは難しい。
It's difficult to improve one's English proficiency in a short time.
Communication or transmission of opinions/requests from the general populace up to higher authorities (an administrative/official usage).
住民の苦情を市役所に上達させるために、委員会が発足した。
A committee was formed to bring residents' complaints to the city hall.
その陳情書は中央省庁へ上達されたと聞いている。
I heard that the petition was forwarded up to the central ministry.