Correct

纹丝

/ wénsī / 
Strokes

Definition

tiny bit/a jot/whisker

Example

As an Adjective

tiny bit; least; slightest

1
Shǐ
使
bù
不
shòu
受
wénsī
纹丝
gānrǎo
干扰

not disturb sb in the slightest