μῶλυς

Etymology
For, compare. Because of the unclear meaning and formation, this adjective is etymologically hard to assess. Connection with does not explain the long vowel -ω-. Comparison with is mentioned by Pokorny. As Frisk remarks, everything remains. According to Beekes, the suffix -υκ- looks.

Adjective

 * 1) soft, weak, feeble
 * 2) weak in intellect, dull
 * 1) weak in intellect, dull