Denshi Jisho — Online Japanese dictionary

竦む すくむ to cower; to be cramped
Godan verb with mu ending, Intransitive verb 
竦める すくめる to shrug (shoulders); to duck (head); to draw back (body)
Ichidan verb, Transitive verb, Usually written using kana alone 
竦然 しょうぜん terrified; horrified
Taru-adjective, Adverb taking the 'to' particle 
三竦み さんすくみ three-way deadlock
Noun 
射竦める いすくめる to pin the enemy down; to glare another down (and render impotent)
Ichidan verb, Transitive verb 
立ち竦む たちすくむ to be petrified; to be unable to move; to be paralyzed (with horror); to be stupefied (with amazement)
Godan verb with mu ending, Intransitive verb 
足が竦む あしがすくむ to freeze (from fear); to be unable to (too frightened to) run
Expression, Godan verb with mu ending 
竦み上がる すくみあがる to cringe with fear; to cower with fright; to be terribly afraid
Godan verb with ru ending 
抱き竦める だきすくめる to hug tight; to grasp firmly; to embrace tightly
Ichidan verb, Transitive verb 
肩を竦める かたをすくめる to shrug one's shoulders
Expression, Ichidan verb 

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