CERTAIN


Meaning of CERTAIN in English

I. BEING SURE

Frequency: The word is one of the 3000 most common words in English.

1.

If you are ~ about something, you firmly believe it is true and have no doubt about it. If you are not ~ about something, you do not have definite knowledge about it.

She’s absolutely ~ she’s going to make it in the world...

We are not ~ whether the appendix had already burst or not...

It wasn’t a balloon–I’m ~ of that.

= sure

ADJ: v-link ADJ, oft ADJ that/wh, ADJ of/about n

2.

If you say that something is ~ to happen, you mean that it will definitely happen.

However, the scheme is ~ to meet opposition from fishermen’s leaders...

Brazil need to beat Uruguay to be ~ of a place in the finals...

The Prime Minister is heading for ~ defeat if he forces a vote...

Victory looked ~.

ADJ: oft ADJ to-inf, it v-link ADJ that/wh, ADJ of n/-ing

3.

If you say that something is ~, you firmly believe that it is true, or have definite knowledge about it.

One thing is ~, both have the utmost respect for each other...

It is ~ that Rodney arrived the previous day..

ADJ: v-link ADJ, oft it v-link ADJ that/wh

4.

If you know something for ~, you have no doubt at all about it.

Hill had to find out for ~.

PHRASE: PHR with cl (not first in cl)

5.

If you make ~ that something is the way you want or expect it to be, you take action to ensure that it is.

Firstly, they must make ~ that their pension needs are adequately catered for...

= make sure

PHRASE: V inflects

II. REFERRING AND INDICATING AMOUNT

Frequency: The word is one of the 1500 most common words in English.

1.

You use ~ to indicate that you are referring to one particular thing, person, or group, although you are not saying exactly which it is.

There will be ~ people who’ll say ‘I told you so!’...

Leaflets have been air dropped telling people to leave ~ areas.

ADJ: det ADJ, ADJ n

2.

When you refer to ~ of a group of people or things, you are referring to some particular members of that group. (FORMAL)

They’ll have to give up completely on ~ of their studies.

= some

QUANT: QUANT of def-pl-n

3.

You can use a ~ before the name of a person in order to indicate that you do not know the person or anything else about them.

She managed to arrange for them to be hidden in the house of a ~ Father Boduen.

ADJ: a ADJ n-proper

4.

You use a ~ to indicate that something such as a quality or condition exists, and often to suggest that it is not great in amount or degree.

That was the very reason why he felt a ~ bitterness...

ADJ: a ADJ sing-n/n-uncount

Collins COBUILD.      Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) .