中英語のlurch、ボードゲーム、lurenの「待つ」「潜む」「待ち伏せる」が語源で、語源的にはlourのlurkと同じ。
lurchは傾く、ぐらつく、揺れる。起源は不明だが、船が風や波で激しく揺れたり傾いたりすることを指す海事用語で、おそらくlurch、遭難、危険からきている。
When a Ship is brought by the Lee, it is commonly occa?sioned by a large Sea, and by the Neglect of the Helm's-man. When the Wind is two or three Points on the Quarter, the Ship taking a Lurch, brings the Wind on the other Side, and lays the Sails all dead to the Ma?t; as the Yards are braced up, ?he then having no Way, and the Helm being of no Service, I would therefore brace about the Head ?ails ?harp the other Way .... [John Hamilton Moore, Practical Navigator, 8th ed., 1784]