Как по Английски будет изрядно

pronoun

A large or sufficient amount or quantity; more than enough.

Примеры использования:

I would have plenty of time to get home before my parents arrived

noun

A situation in which food and other necessities are available in sufficiently large quantities.

Примеры использования:

Such natural phenomena as famine and plenty

adverb

Used to emphasize the degree of something.

Примеры использования:

She has plenty more ideas

adverb

Quickly; briskly.

Примеры использования:

Get over here smartish!

adverb

By a notably large amount or to a notably large extent; greatly.

Примеры использования:

Things have improved considerably over the last few years