(1)move stealthily; "The lonely man skulks down the main street all day"
(2)こっそり動く
(3)put, bring, or take in a secretive or furtive manner; "sneak a look"; "sneak a cigarette"
(4)秘密またはひそかな方法で置く、持ち込むまたは受け入れる
(1)