[predeterminer], [adverb] [not gradable] - two timesI've already asked him twice.She has visited India twice.(formal) She has twice visited India.He has to empty the bucket twice daily (= two times every day).There are twice as many houses in this area as there used to be.She gave me twice the number of cards I asked for.The state is at least twice as big as England.The boy was twice her size/twice Jill's size (= much bigger than she was).
TWICE
Meaning of TWICE in English
Cambridge English vocab. Кембриджский английский словарь. 2012