不温不火

1. • (of sales, TV show ratings etc) lukewarm
2. • moderate
3. • so-so
4. • calm

     of a person

5. • unruffled

Character by character

• 不(bù)no
• 温(wēn)surname Wen
• 不(bù)no
• 火(huǒ)surname Huo