A primitive root; to lean idly, i.e. To be indolent or slack -- be slothful.
H6101. atsel
[עָצֵל] verb Niph`al be sluggish (Late Hebrew in derived species, and derivatives; compare Arabic III. stick fast in coitu, Lane2086; Syriac be stupid); — Imperfect2masculine plural לָלֶכֶת אַלתֵּֿעָֽצְלוּ Judges 18:9 be not sluggish in going.