Usage of the character 挠

to scratch
to thwart
to yield

náoliè

挠裂

[撓裂]

split due to repeated folding
flex crack

náogōu

挠钩

[撓鉤]

iron hook at the end a long pole

náolü

挠率

[撓率]

the torsion (of a space curve)

náoqū

挠曲

[撓曲]

to bend
flexing
deflection

qūnáo

屈挠

[屈撓]

to surrender
to yield
to flex

náobài

挠败

[撓敗]

defeated
routed
crushed

zǔnáo

阻挠

[阻撓]

to thwart
to obstruct (sth)

zhuānao

抓挠

[抓撓]

to scratch
to mess about with
to quarrel
to scramble to do
sb or sth that one can rely on

náotóu

挠头

[撓頭]

tricky
problematic
difficult
to scratch one's head (in puzzlement)

gānnáo

干挠

[干撓]

variant of 干擾／干扰 (gānrǎo), to interfere

náoyǎngyang

挠痒痒

[撓癢癢]

to tickle

yǎngyangnáo

痒痒挠

[癢癢撓]

backscratcher (made from bamboo etc)

bùqūbùnáo

不屈不挠

[不屈不撓]

unyielding
indomitable

bǎizhébùnáo

百折不挠

[百折不撓]

to keep on fighting in spite of all setbacks (idiom)
to be undaunted by repeated setbacks
to be indomitable

zhuā'ěrnáosāi

抓耳挠腮

[抓耳撓腮]

to tweak one's ears and scratch one's cheeks (as an expression of anxiety, delight, frustration etc) (idiom)