существенный in inglese:

This is essentiale

Pocket calculators are as cheap to buy as a pair of socks, and as essential to thousands of British school children as a pencil and eraser.

From our human experience and history, at least as far as I am informed, I know that everything essential and great has only emerged when human beings had a home and were rooted in a tradition. Today’s literature is, for instance, largely destructive.

Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety.

An essential condition for a helpful interview is a quiet room in which doctor and parents can sit comfortably and in private without being interrupted.

I'm sure you're thinking to yourself, 'Why is this guy making such a big deal of this?' But make no mistake. This is essential.

The command of communication skills in multiple languages is essential to any company providing goods and services on the world market.

Some knowledge of foreign languages, of Spanish in particular, is essential.

Some Westerners may think our houses are lacking in everything they consider essential.

When the articles of incorporation are complete it is essential to go to the notary public's office to undertake certification of the articles drawn up.

she's a spacial filmmaker, she has absolutly incredible way of telling the story, and it was essential

Elle magazine has a great section on fall’s essential boots and bags.

The essential problem to choose summer holiday will be absence one of my colleague at work.

substantial changes

They divorced on August 28, 1996, with Diana receiving a substantial settlement.

Activities like that pose a substantial risk of injury

-The furniture was cheap and not very substantial. -substantial meal

I worked extra shift last month and earned substantial amount of money.

It will require substantial time and financial resources.

The project is well-planned and interesting, but its immediate impact on the bottom line is not considered substantial.

This is the first substantial change to the Treaty of Maastricht on economic and monetary union.

I am sorry about the long answer but the details were also substantial.

a substantial number/amount/proportion: A substantial number of members have called to complain.

The compensation that I received after my accident, was substantial enough to buy a new car.

Officials said the company is in talks with two cities offering substantial incentives to build the studio.

Even the mother was always offering me things, though I knew she expected substantial presents in return.

If one is to save up the chicken feed every day, it will amount to a very substantial sum in a year.