voluminous
(adjective)
adjective
1. large in volume or bulk
- a voluminous skirt
Similar word(s): big, large
2. marked by repeated turns and bends
Similar word(s): crooked, tortuous, twisting, twisty, winding
3. large in number or quantity (especially of discourse)
- a subject of voluminous legislation
Similar word(s): abundant, copious