нареч.
разг. fairly, pretty well
tolerably я изрядно устал – I am pretty tired они вчера вечером изрядно выпили – they had a fair amount to drink last night изрядно выпить
изрядн|о - разг. considerably, rather, much
я ~ устал I am pretty tired
~ый разг. fair, quite a
~ое расстояние quite a distance, ~ая сумма денег quite a sum, quite a lot of money
~ое количество a fair amount