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7 ADV [ADV before v] You can use sure in order to emphasize what you are saying. [INFORMAL , EMPHASIS ] □  'Has the whole world just gone crazy?'—'Sure looks that way, doesn't it.'

8 PHRASE You say sure enough , especially when telling a story, to confirm that something was really true or was actually happening. □  We found the English treacle pudding too good to resist. Sure enough, it was delicious.

9 PHRASE If you say that something is for sure or that you know it for sure , you mean that it is definitely true. □  One thing's for sure, his vocal style hasn't changed much over the years.

10 PHRASE If you make sure that something is done, you take action so that it is done. □  Make sure that you follow the instructions carefully.

11 PHRASE If you make sure that something is the way that you want or expect it to be, you check that it is that way. □  He looked in the bathroom to make sure that he was alone.

12 PHRASE If you say that something is a sure thing , you mean that you are certain that it will happen or be successful. [INFORMAL ] □  This proposal is by no means a sure thing.

13 PHRASE If you are sure of yourself , you are very confident about your own abilities or opinions. □  I'd never seen him like this, so sure of himself, so in command. SYNONYMS sure ADJ 1

certain:It wasn't a balloon–I'm certain of that.

positive:'She's never late. You sure she said eight?'—'Positive.'

definite:Mary is very definite about this.

convinced:He was convinced that I was part of the problem.

su re-fire also surefire ADJ [ADJ n] A sure-fire thing is something that is certain to succeed or win. [INFORMAL ] □  …a surefire best seller.

su re-foo ted also surefooted

1 ADJ A person or animal that is sure-footed can move easily over steep or uneven ground without falling. □  My horse is small but wiry and sure-footed.

2 ADJ If someone is sure-footed , they are confident in what they are doing. □  The party was growing increasingly sure-footed.

sure|ly ◆◇◇ /ʃʊə ^r li/

1 ADV You use surely to emphasize that you think something should be true, and you would be surprised if it was not true. [EMPHASIS ] □  You're an intelligent woman, surely you realize by now that I'm helping you. □  If I can accept this situation, surely you can.

2 ADV [ADV before v] If something will surely happen or is surely the case, it will definitely happen or is definitely the case. [FORMAL ] □  He knew that under the surgeon's knife he would surely die. □  He is an artist, just as surely as Rembrandt or any other first-rate portrait painter is one.

3 PHRASE If you say that something is happening slowly but surely , you mean that it is happening gradually but it is definitely happening. □  Slowly but surely she started to fall in love with him.

sure|ty /ʃʊə r I ti/ (sureties ) N‑VAR A surety is money or something valuable which you give to someone to show that you will do what you have promised. □  The insurance company will take warehouse stocks or treasury bonds as surety.

surf /sɜː ^r f/ (surfs , surfing , surfed )

1 N‑UNCOUNT Surf is the mass of white bubbles that is formed by waves as they fall upon the shore. □  …surf rolling onto white sand beaches.