znaczący istotny in English:

He studied the scientists considered to be the most significant of the 19th century.

significant headway

It is a significant change in our policy. / In addition, they reported significant growth in their investment in 2005 and 2006. / The effect was significant from the first year.

My company is one of The most significant on The global market.

At present the text book issue between the Korean and Japanese governments is developing into a significant problem affecting both countries.

The significant point as regards the segregation problem is to clarify the value system of each group.

If this proposal is put into practice, the business world will be affected to a significant degree.

With text we mean any communicative situation of significant length.

What is significant in this argument is that his theory can identify those phenomena.

The workshops have a significant glass front, allowing maximum light and view of the interior from outside

The thin mist from yesterday will turn into thick fog at night which can cause adverse weather conditions for drivers as visibility will be significantly reduced.

Head office is very worried there was a significant decrease in the number of orders taken in the last quarter.

It is significant that Falkner did not attend the meeting himself. / → Opposite - insignificant

The scientists made a significant breakthrough. (Naukowcy dokonali istotnego przełomu.)

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.

In Japan, employment opportunities are significantly lower for women than they are for men.

significantly higher

Food prices have increased significantly this year.

Listening to Mozart can significantly increase your intelligence.

Security charges and security overall have increased significantly in recent years.

While most of us are significantly better off financially than our parents and grandparents, happiness levels haven't changed to reflect that.

The pollution has increased significantly. We should do something about it.

This change will significantly influence the machine work.

This movie is significantly different from the previous one.

My piano playing has improved significantly since I started with a new teacher.

The number of students increases significantly from year to year.

The cost of food has gone up significantly as well

Health problems can be significantly reduced by careful diet.

The two sets of figures are not significantly different.

Brightening the display on most cell phones reduces their battery life significantly.