‘Adequate’ has the same meaning as ‘enough,’ but it is more formal.

Examples of usage:
His work is adequate, but not very good.
During your working life you need to make sure that you make adequate provision for your retirement.
The size of the carpark is inadequate for the number of cars using the area.

Collocations: When you learn new vocab, make sure that you note collocations too. For this group of words some collocations are:
access to, access from, access via
adequate for, adequacy of, inadequacy of
annual turnover, annual rise
apparent cause, apparent problem
approximation of,  approximate numbers

Check the meanings of the words if you don’t already know them. Check the meanings of the various forms as sometimes they are different. You can check them at Time4english by clicking the words (http://www.time4english.com/aamain/lounge/awl.asp).

Complete the sentences below with the correct word and the correct form of the word.

1. In many countries welfare payments are _______________ for even basic needs. (annual, adequate)
2. Pete was given ______________ to the administration area because it is relevant to his work.(access, approximate)
3. _______________some women don’t realise they are pregnant until the baby arrives. (apparent, access)
4. _______________ figures for the new project amount to around $1.2 million. (apparent, approximate)
5. The government recently released the _______________ unemployment figures. (adequate, annual)

Answers (in the wrong order below)
4. Approximate   5. annual   1. inadequate    2. access   3. Apparently