moliminous

Etymology
From (the stem of) +.

Adjective

 * 1)  Momentous, weighty.
 * 2)  Laborious, involving or exerting great effort; arduous.
 * 1)  Laborious, involving or exerting great effort; arduous.
 * 1)  Laborious, involving or exerting great effort; arduous.
 * 1)  Laborious, involving or exerting great effort; arduous.