Choose the word most opposite in meaning to the word 'COPIOUS'.

Copious means existing in large quantity, as in copious notes. The opposite is 'sparse', meaning thinly scattered or scanty. 'Abundant' is a synonym and therefore wrong, while 'valuable' and 'pure' speak of quality, not quantity. Read the question carefully, since the synonym of the word is almost always included among the options as a deliberate distractor.