小首を傾げる

こくびをかしげる

to bend one's head slightly to one side, to look slightly doubtful

鎌首をもたげる

かまくびをもたげる

to raise one's head (esp. of a snake)

首を吊る

くびをつる

to hang (e.g. oneself)

首を取る

くびをとる

to decapitate; to take (someone's) head off

首を振る

くびをふる

to shake one's head

首を切る

くびをきる

to fire from a job, to dismiss, to discharge

首をやる

くびをやる

to be hanged, to be struck dead, to eat one's hat

首を括る

くびをくくる

to hang oneself, to strangle oneself

首投げ

くびなげ

kubinage, neck (head) throw

投げ首

なげくび

being at a loss

首を揃える

くびをそろえる

to get together

首を傾ける

くびをかたむける

to incline one's head

首を縮める

くびをちぢめる

to duck one's head

首を絞める

くびをしめる

to wring the neck, to strangle

首をひねる

くびをひねる

to cock one's head in puzzlement, to tilt one's head in contemplation, to wrack one's brain, to think hard

寝首をかく

ねくびをかく

to cut off the head of a sleeping person, to assassinate someone while he sleeps

首をすくめる

くびをすくめる

to duck one's head; to pull in one's head; to duck down; to shrug one's shoulders

首を長くする

くびをながくする

to eagerly look forward to

首を横に振る

くびをよこにふる

to shake one's head