Doubt as to whether/what etc

Some government ministers had serious doubts as to whether the policy would work.

There is an element of doubt as to whether the deaths were accidental.

2. no doubt

used when you are saying that you think something is probably true

No doubt you'll have your own ideas. She was a top student, no doubt about it (=it is certainly true).

3. if/when (you're) in doubt

used when advising someone what to do if they are uncertain about something

If in doubt, consult your doctor.

4. be in doubt

if something is in doubt, it may not happen, continue, exist, or be true

The future of the peace talks is in doubt.

5. beyond doubt

if something is beyond doubt, it is completely certain

The prosecution must prove beyond reasonable doubt that the accused is guilty of the crime.

put the game/result/match beyond doubt (=do something which makes it certain that a particular player or team will win a match)

Ferdinand's second goal put the game beyond doubt.

6. without doubt

used to emphasize an opinion

Sally was without doubt one of the finest swimmers in the school.

7. open to doubt

something that is open to doubt has not been proved to be definitely true or real

The authenticity of the relics is open to doubt.

ￚsee also self-doubt, give somebody/something the benefit of the doubt

Doubt verb (transitive not in progressive)

1. to think that something may not be true or that it is unlikely

Kim never doubted his story.

doubt (that) I doubt we'll ever see him again.

doubt if/whether You can complain, but I doubt if it'll make any difference. '

2. to not trust or have confidence in someone

I never doubted myself. I always knew I could play tennis at this level.

ￚ doubter noun [countable ]

Doubtful adjective

1. probably not true or not likely to happen

Prospects for a lasting peace remain doubtful.

It is doubtful if/whether

It was doubtful whether the patient would survive the operation.

It is doubtful that

It is doubtful that the missing airmen will ever be found.

2. not sure that something is true or right

'Everything's going to be all right, you'll see.' Jenny looked doubtful.

Doubtful if/whether

I'm still doubtful whether I should accept this job.

Doubtful about (doing) something

At first we were doubtful about employing Charlie.

3. unlikely to be successful

Already the whole scheme was looking increasingly doubtful.

4. probably not good

ￚ synonym dubious Here the tap water is of doubtful quality.

ￚ doubtfully adverb

Protect verb

1. [intransitive and transitive]to keep someone or something safe from harm, damage, or illness

ￚsee also protection, protective

Are we doing enough to protect the environment?

Protect somebody/something from something

The cover protects the machine from dust.

Protect somebody/something against something

Physical exercise can protect you against heart disease.

Protect against

Waxing your car will help protect against rust.

2. [transitive usually passive]if an insurance company protects your home, car, life, etc, it agrees to pay you money if things are stolen or damaged or you are hurt or killed

ￚ synonym cover

Unemployment insurance means that you are partially protected if you lose your job.

3. [transitive] to help the industry and trade of your own country by taxing or restricting foreign goods

Protection noun

1. [uncountable] when someone or something is protected

protection of the protection of the environment

protection against/from evidence that vitamin C gives protection against cancer

protection for This law provides protection for threatened animals and plants.

For protection

The police were issued with body amour for extra protection.

2. [uncountable and countable] something that protects

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