벅차요 · 벅찼어요 · 벅찬 (+noun)
overwhelmed (with emotion), full to bursting; too much to handle
Example
아이가 태어난 날 가슴이 벅차서 말이 안 나왔어요.
The day my child was born, my heart was so full I couldn't speak.
Word parts
Two uses: 가슴이 벅차다 (heart bursting with joy) and 일이 벅차다 (work is too much).
Good to know
Usually with 가슴: 가슴 벅찬 순간 (a heart-swelling moment).