1 flat

2 dull

3 ordinary

4 nothing special

1 insipid

2 diluted

3 weak

4 mild

5 light in color

6 tasteless

7 indifferent

8 (variant of 氮[dàn]) nitrogen

1 calm and collected

2 unperturbed

1 faint

2 dim

3 dull

4 insipid

5 unenthusiastic

6 indifferent

1 surname Hu

1 lose a wheel, tear at the gun (idiom); flustered and confused in a panic

1 a gentleman's friendship, insipid as water (idiom, from Zhuangzi 莊子|庄子[Zhuāng zǐ])

1 ordinary and mediocre (idiom); nothing to write home about

1 to manage by painstaking effort (idiom)

1 to talk about this and that (idiom); to ramble incoherently