nán​guài HSK7

no wonder

难怪 (難怪) nán​guài
no wonder adverb
it is not surprising that; understandable given the circumstances

No wonder he's so tired; it turns out he worked all through the night.

Frequency

Movie subtitles
13.1 per million appears in 7% of films
Written text
16.4 per million

Details

HSK 2.0
Level 5
HSK 3.0
Level 7

Sources

Definitions
CC-CEDICT