1. large in amount or extent or degree
e.g. it cost a considerable amount
a goodly amount
received a hefty bonus
a respectable sum
a tidy sum of money
a sizable fortune
Synonym: goodlygoodishhealthyheftyrespectablesizeabletidy
2. fairly large
e.g. a sizable fortune
an ample waistline
of ample proportions
Synonym: amplesizeable