偶然
ǒurán · HSK 5
accidentally
🎲 偶 = by chance + 然 = so/thus; together: 'happens to be so'
偶 originally meant a paired idol or mate, extended to 'coincidental pairing.' 然 is a classical particle meaning 'so/thus.' Combined, 偶然 names an event that just so happens — accidental or occasional.