effect Antonyms

inaction progeniture reason root rootlet rootstock seed semen souce source start stereobate stimulus stinginess process principle perpetuation inefficaciousness instigation mainspring matrix mercy mismanagement mopboard motif motive occasion origin pavement pedigree stylobate taproot seedbed provenance provenience aquifer reference point take hold intelligentsia miserliness grandparent back story crap out roots zipper spin off root word firebase tripe tuber