xìng​kuī HSK7

fortunately

幸亏 (幸虧) xìng​kuī
fortunately adverb
used to indicate that a favorable outcome resulted from luck or a specific circumstance, often preventing a negative result

Luckily you reminded me, otherwise I would have forgotten.

Frequency

Movie subtitles
3.73 per million appears in 2% of films
Written text
7.37 per million

Details

HSK 2.0
Level 5
HSK 3.0
Level 7

Sources

Definitions
CC-CEDICT