common
If something is common, it is found in large numbers or it happens often.
His name was Hansen, a common name in Norway.
These days, it is common to see adults returning to study.
The comparative and superlative forms of common are usually more common and most common. Commonest is sometimes used instead of more common in front of a noun.
Job sharing has become more common.
The disease is most common in adults over 40.
Stress is one of the commonest causes of insomnia.
Be careful
Don't use a that-clause after common. Don't say, for example, ‘It is quite common that motorists fall asleep while driving’. You say ‘It is quite common for motorists to fall asleep while driving’.
Don't use a that-clause after common. Don't say, for example, ‘It is quite common that motorists fall asleep while driving’. You say ‘It is quite common for motorists to fall asleep while driving’.
It is common for a child to become deaf after even a moderate ear infection.